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<DIV align="right" style="font-size: 10pt; margin-top: 12pt">Registration No.&nbsp;333-<U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</U>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt; margin-bottom: 6pt">As filed with the United States Securities and Exchange Commission on May&nbsp;16, 2008</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>PLEXUS CORP.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
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<TR valign="bottom">
    <TD align="center" valign="top"><B>Wisconsin</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>39-134447</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction of <BR>
incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer<BR>
Identification No.)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>55 Jewelers Park Drive <BR>
Neenah, Wisconsin</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="bottom"><B>54957-0156</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(Address of Principal Executive Offices)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Zip Code)</TD>
</TR>
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</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>PLEXUS CORP.<BR>
2008 LONG-TERM INCENTIVE PLAN</B><BR>
(Full title of the plan)<BR>
<DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
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<TR valign="bottom">
    <TD align="center" valign="top">ANGELO M. NINIVAGGI
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><I>Copy to:</I></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">Vice President, General Counsel and Secretary
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">KENNETH V. HALLETT</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">PLEXUS CORP.
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Quarles &#038; Brady LLP</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">55 Jewelers Park Drive
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">411 East Wisconsin Avenue</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">P.O. Box 156
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Milwaukee, Wisconsin 53202</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">Neenah, Wisconsin 54957-0156</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
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</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt">(Name and address of agent for service)</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>(920)&nbsp;722-3451</B><BR>
(Telephone number, including area code, of agent for service)</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of &#147;large accelerated filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule 12b-2 of the Exchange Act. (Check one):</DIV>
<TABLE width="100%" style="font-size: 10pt; margin-top: 0pt"><TR><TD>Large accelerated filer&nbsp;<FONT face="Wingdings">&#254;</FONT></TD><TD align="center">Accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT>&nbsp;</TD><TD align="center">Non-accelerated filer&nbsp;<FONT face="Wingdings">&#111;</FONT><BR>(Do not check if a smaller reporting company)</TD><TD align="right">Smaller reporting company&nbsp;<FONT face="Wingdings">&#111;</FONT></TD></TR></TABLE>





<DIV align="center" style="font-size: 10pt; margin-top: 12pt">CALCULATION OF REGISTRATION FEE</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
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    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Maximum</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center"><B>Title of Securities to be</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount to be</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Offering Price</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Aggregate</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff"><B>Registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #ffffff"><B>Registered (1)</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Per Share</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Offering Price</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #ffffff"><B>Registration Fee</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>

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<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD ALIGN="CENTER" style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common Stock,
par value $.01 per share</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap colspan="3" align="center" style="border-top: 2px solid #000000">5,500,000 shares</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(2</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">138,842,695 </TD>
    <TD nowrap style="border-top: 2px solid #000000">(2)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">5,456.52</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD ALIGN="CENTER" style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Preferred Stock Purchase Rights</DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(3</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="right" style="border-top: 2px solid #000000">(3</TD>
    <TD nowrap style="border-top: 2px solid #000000">)</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000">(3)</TD>
    <TD nowrap style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000">(3)</TD>
    <TD nowrap style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="23" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

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</TABLE>
</DIV>




<DIV style="margin-top: 3pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left">(1)</TD>
    <TD>&nbsp;</TD>
    <TD>The Plexus Corp. 2008 Long-Term Incentive Plan (the &#147;Plan&#148;) provides by its terms for the
issuance of up to 5,500,000 shares of the Registrant&#146;s Common Stock, par value $.01 per share
(the &#147;Common Stock&#148;). The Plan provides for possible adjustment of the number of and class of
shares which may be delivered under the Plan, and in the number and class of and/or price of
shares subject to outstanding Stock Options, Stock Appreciation Rights (&#147;SARs&#148;), Restricted
Stock and Performance Stock, in the event of certain capital or other changes affecting the
Common Stock. Thus, in addition to the above stated 5,500,000 shares, pursuant to Rule 416(c)
under the Securities Act of 1933, this Registration Statement also covers an indeterminate
number of shares of Common Stock that may become subject to the Plan by means of any such
adjustment.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(2)</TD>
    <TD>&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(h)
under the Securities Act of 1933, at the rate of $39.30 per million. The offering price is
based on Stock Options and SARs for 134,250 shares, which were issued pursuant to the Plan on
April&nbsp;28, 2008, at $24.21 per share, and the remaining 5,365,750 shares based upon $25.27 per
share, which is the average of the high and low sales prices of the Common Stock, as reported
on the NASDAQ Global Select Market on May&nbsp;9, 2008. The actual offering price for future
awards will be determined in accordance with the terms of the Plan.</TD>
</TR>

<TR style="font-size: 3pt"><TD>&nbsp;</TD></TR>

<TR valign="top">
    <TD nowrap align="left">(3)</TD>
    <TD>&nbsp;</TD>
    <TD>One Preferred Stock Purchase Right is issued in tandem with each share of Common Stock. The
value attributable to the Preferred Stock Purchase Rights is reflected in the market price of
the Common Stock to which the Rights are attached. Includes registration of shares of the
Registrant&#146;s Preferred Stock and Common Stock underlying such Rights. No separate
consideration will be received for the Rights, which initially will trade together with the
Common Stock.</TD>
</TR>

</TABLE>
</DIV>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>









<P align="center" style="font-size: 10pt"><!-- Folio -->&nbsp;<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">










<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART I</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Information specified in Part&nbsp;I of Form S-8 (Items 1 and 2) will be sent or given to Plan
participants as specified by Rule&nbsp;428(b)(1) under the Securities Act of 1933, as amended.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PART II</B>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by Plexus Corp. (the &#147;Registrant&#148;) (Commission File No.
000-14824) with the Securities and Exchange Commission pursuant to Section&nbsp;13 of the Securities
Exchange Act of 1934, as amended, are incorporated herein by reference:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended September&nbsp;29, 2007;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The Registrant&#146;s Quarterly Reports on Form 10-Q for the quarters ended December&nbsp;29, 2007,
and March&nbsp;29, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;The Registrant&#146;s Current Reports on Form 8-K dated November&nbsp;15, 2007, January&nbsp;3, 2008,
February&nbsp;13, 2008, February&nbsp;25, 2008, and April&nbsp;4, 2008;
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;The description of the Registrant&#146;s Common Stock contained in the Registrant&#146;s
Registration Statement on Form 8-A, dated July&nbsp;18, 1986, as amended by Amendment No.&nbsp;2 thereto
dated May&nbsp;20, 1999; and
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;The description of the Registrant&#146;s Preferred Stock Purchase Rights contained in the
Registrant&#146;s Registration Statement on Form 8-A, dated August&nbsp;17, 1998, as amended by Amendment No.
1 thereto dated December&nbsp;6, 2000.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;All documents subsequently filed by the Registrant pursuant to Sections&nbsp;13(a), 13(c), 14 and
15(d) of the Securities Exchange Act of 1934, prior to the filing of a post-effective amendment
which indicates that all securities offered hereby have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be
a part hereof from the date of the filing of such documents.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Any statement contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded for purposes hereof to the extent that a
statement contained herein or in any other subsequently filed document which also is or is deemed
to be incorporated by reference herein modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed, except as so modified or superseded, to constitute a
part hereof.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-2-<!-- /Folio -->
</DIV>

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<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant is incorporated under the Wisconsin Business Corporation Law (the &#147;WBCL&#148;). The
WBCL includes provisions providing for indemnification by a corporation of a director or officer
against certain liabilities and expenses incurred by him or her in any proceeding (whether
threatened, pending, or completed, and whether brought by the Registrant or any other person) to
which he or she was a party because of being a director or officer. Under Section&nbsp;180.0851(1) of
the WBCL, the Registrant is required to indemnify a director or officer, to the extent such person
is successful on the merits or otherwise in the defense of a proceeding, for all reasonable
expenses incurred in the proceeding if such person was a party because he or she was a director or
officer of the Registrant. In all other cases, the Registrant is required by Section&nbsp;180.0851(2)
of the WBCL to indemnify a director or officer against liabilities (including, among other things,
judgments, penalties, fines and reasonable expenses) incurred in a proceeding to which such person
was a party because he or she was an officer or director of the Registrant, unless liability was
incurred because he or she breached or failed to perform a duty to the Registrant and the breach or
failure constitutes any of the following: (i)&nbsp;a willful failure to deal fairly with the Registrant
or its shareholders in connection with a matter in which he or she has a material conflict of
interest; (ii)&nbsp;a violation of criminal law, unless he or she had reasonable cause to believe his or
her conduct was lawful or no reasonable cause to believe his or her conduct was unlawful; (iii)&nbsp;a
transaction from which he or she derived an improper personal profit; or (iv)&nbsp;willful misconduct.
Section&nbsp;180.0858(1) of the WBCL provides that, subject to certain limitations, the mandatory
indemnification provisions do not preclude any additional right to indemnification or allowance of
expenses that a director or officer may have under the Registrant&#146;s articles of incorporation,
bylaws, a written agreement or a resolution of the Board of Directors or shareholders.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;180.0851(2)(c) of the WBCL specifies that the termination of a proceeding by judgment,
order, settlement, or conviction, or upon a plea of no contest or an equivalent plea, does not, by
itself, create a presumption that indemnification is not required. Section&nbsp;180.0853 of the WBCL
permits the Registrant to pay or reimburse reasonable expenses as incurred if the director or
officer affirms his or her good faith belief that he or she has not breached or failed to perform
his or her duties to the corporation and undertakes to make repayment to the extent it is
ultimately determined that indemnification is not required.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;180.0859 of the WBCL provides that it is the public policy of the State of Wisconsin
to require or permit indemnification, allowance of expenses and insurance to the extent required or
permitted under Sections&nbsp;180.0850 to 180.0858 of the WBCL for any liability incurred in connection
with a proceeding involving a federal or state statute, rule or regulation regulating the offer,
sale or purchase of securities.
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-3-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;180.0828 of the WBCL provides that, with certain exceptions, a director is not liable
to a corporation, its shareholders, or any person asserting rights on behalf of the corporation or
its shareholders, for damages, settlements, fees, fines, penalties or other monetary liabilities
arising from a breach of, or failure to perform, any duty resulting solely from his or her status
as a director, unless the person asserting liability proves that the breach or failure to perform
constitutes any of the four exceptions to mandatory indemnification under Section&nbsp;180.0851(2)
referred to above.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Under Section&nbsp;180.0833 of the WBCL, directors of the Registrant against whom claims are
asserted with respect to the declaration of an improper dividend or other distribution to
shareholders to which they assented are entitled to contribution from other directors who assented
to such distribution and from shareholders who knowingly accepted the improper distribution, as
provided therein.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Article&nbsp;VIII of the Registrant&#146;s Bylaws contains provisions that generally parallel the
indemnification provisions of the WBCL and cover certain procedural matters not dealt with in the
WBCL. Directors and officers of the Registrant are also covered by directors&#146; and officers&#146;
liability insurance under which they are insured (subject to certain exceptions and limitations
specified in the policy) against expenses and liabilities arising out of proceedings to which they
are parties by reason of being or having been directors or officers.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See the Exhibit&nbsp;Index following the Signatures page in this Registration Statement, which
Exhibit&nbsp;Index is incorporated herein by reference.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned Registrant hereby undertakes:
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)&nbsp;To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(i)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any prospectus required by Section
10(a)(3) of the Securities Act of 1933;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(ii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To reflect in the prospectus any facts or
events arising after the effective date of the Registration Statement
(or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement. Notwithstanding
the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of securities offered would not exceed that
which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the</TD>
</TR>

</TABLE>
</DIV>
<P align="center" style="font-size: 10pt"><!-- Folio -->-4-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR valign="top" style="font-size: 10pt; color: #textcolor#; background: #bgcolor#">
    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>form of prospectus filed with the Commission pursuant to Rule 424(b)
if, in the aggregate, the changes in volume and price represent no
more than a 20% change in the maximum aggregate offering price set
forth in the &#147;Calculation of Registration Fee&#148; table in the effective
Registration Statement;</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="8%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">(iii)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>To include any material information with
respect to the plan of distribution not previously disclosed in the
Registration Statement or any material change to such information in
the Registration Statement;</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<I>Provided, however</I>, that paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if
the information required to be included in a post-effective amendment by those paragraphs is
contained in reports filed with or furnished to the Commission by the Registrant pursuant to
Section&nbsp;13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by
reference in the Registration Statement.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)&nbsp;That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3)&nbsp;To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;....
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(5)&nbsp;That, for the purpose of determining liability under the Securities Act of 1933 to any
purchaser:
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(i)&nbsp;If the Registrant is relying on Rule&nbsp;430B:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) Each prospectus filed by the registrant pursuant to Rule&nbsp;424(b)(3)
shall be deemed to be part of the registration statement as of the date the
filed prospectus was deemed part of and included in the registration
statement; and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) Each prospectus required to be filed pursuant to Rule&nbsp;424(b)(2),
(b)(5), or (b)(7) as part of a registration statement in reliance on Rule
430B relating to an offering made pursuant to Rule&nbsp;415(a)(1)(i), (vii), or
(x)&nbsp;for the purpose of providing the information required by section 10(a)
of the Securities Act of 1933 shall be deemed to be part of and included in
the registration statement as of the earlier of the date such form of
prospectus is first used after effectiveness or the date of the first
contract of sale of securities in the offering described in the prospectus.
As provided in Rule&nbsp;430B, for liability purposes of the issuer and any
person that is at that date an underwriter, such date shall be deemed to be
a new effective date of the registration statement relating to the
securities in
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-5-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">the registration statement to which that prospectus relates, and the
offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof. <I>Provided, however</I>, that no statement made in a
registration statement or prospectus that is part of the registration
statement or made in a document incorporated or deemed incorporated by
reference into the registration statement or prospectus that is part of the
registration statement will, as to a purchaser with a time of contract of
sale prior to such effective date, supersede or modify any statement that
was made in the registration statement or prospectus that was part of the
registration statement or made in any such document immediately prior to
such effective date; or
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(ii)&nbsp;If the Registrant is subject to Rule&nbsp;430C, each prospectus filed
pursuant to Rule 424(b) as part of a registration statement relating to an
offering, other than registration statements relying on Rule&nbsp;430B or other
than prospectuses filed in reliance on Rule&nbsp;430A, shall be deemed to be part
of and included in the registration statement as of the date it is first
used after effectiveness. <I>Provided, however</I>, that no statement made in a
registration statement or prospectus that is part of the registration
statement or made in a document incorporated or deemed incorporated by
reference into the registration statement or prospectus that is part of the
registration statement will, as to a purchaser with a time of contract of
sale prior to such first use, supersede or modify any statement that was
made in the registration statement or prospectus that was part of the
registration statement or made in any such document immediately prior to
such date of first use.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(6)&nbsp;That, for the purpose of determining liability of the Registrant under the Securities Act
of 1933 to any purchaser in the initial distribution of the securities:
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">The undersigned Registrant undertakes that in a primary offering of
securities of the undersigned Registrant pursuant to this Registration
Statement, regardless of the underwriting method used to sell the securities
to the purchaser, if the securities are offered or sold to such purchaser by
means of any of the following communications, the undersigned Registrant
will be a seller to the purchaser and will be considered to offer or sell
such securities to such purchaser:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(i)&nbsp;Any preliminary prospectus or prospectus of the undersigned Registrant
relating to the offering required to be filed pursuant to Rule&nbsp;424;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(ii)&nbsp;Any free writing prospectus relating to the offering prepared by or on
behalf of the undersigned Registrant or used or referred to by the
undersigned Registrant;
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(iii)&nbsp;The portion of any other free writing prospectus relating to the
offering containing material information about the undersigned Registrant
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->-6-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">or its securities provided by or on behalf of the undersigned Registrant;
and
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 8%">(iv)&nbsp;Any other communication that is an offer in the offering made by the
undersigned Registrant to the purchaser.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, each filing of the Registrant&#146;s annual report pursuant
to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable,
each filing of an employee benefit plan&#146;s annual report pursuant to Section 15(d) of the Securities
Exchange Act of 1934) that is incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona fide offering
thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;....
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(h)&nbsp;Reference is made to the indemnification provisions described in Item&nbsp;6 of this
Registration Statement.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred or paid by a
director, officer or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the Registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
</DIV>



<P align="center" style="font-size: 10pt"><!-- Folio -->-7-<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>SIGNATURES</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and
has duly caused this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Neenah, State of Wisconsin, on May&nbsp;16, 2008.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">PLEXUS CORP.<BR>
(Registrant)<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left">/s/ Dean A. Foate
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Dean A. Foate&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="Center" style="font-size: 10pt; margin-top: 6pt"><B>POWER OF ATTORNEY</B>

</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints Dean A. Foate, Ginger M. Jones and Angelo M. Ninivaggi, and each of them, his or her
true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all capacities, to sign any
and all amendments (including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, and any other regulatory authority, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each
and every act and thing requisite and necessary to be done in and about the premises, as fully to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them, or their substitutes, may lawfully do or
cause to be done by virtue hereof.
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities and on the date indicated.*
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="33%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Capacity</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Dean A. Foate
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">President, Chief Executive Officer and
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Dean A. Foate
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director (Principal Executive Officer)</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Ginger M. Jones
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Vice President and Chief Financial Officer</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Ginger M. Jones
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">(Principal Financial Officer)</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Simon J. Painter
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Corporate Controller (Principal Accounting</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Simon J. Painter
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Officer)</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->S-1<!-- /Folio -->
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="33%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Name</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Capacity</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Ralf R. B&#246;er
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Ralf R. B&#246;er</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Stephen P. Cortinovis
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Stephen P. Cortinovis</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ David J. Drury
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">David J. Drury</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Peter Kelly
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Peter Kelly</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ John L. Nussbaum
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">John L. Nussbaum</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Michael V. Schrock
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Michael V. Schrock</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ Dr.&nbsp;Charles M. Strother
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Director</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR style="font-size: 1px">
    <TD colspan="1" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Dr. Charles M. Strother</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="left"><DIV style="font-size: 3pt; margin-top: 13pt; width: 18%; border-bottom: 1px solid #000000">&nbsp;</DIV></DIV>




<DIV style="margin-top: 3pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">
<TR>
    <TD width="3%"></TD>
    <TD width="1%"></TD>
    <TD width="96"></TD>
</TR>
<TR valign="top">
    <TD nowrap align="left">*</TD>
    <TD>&nbsp;</TD>
    <TD>Each of these signatures is affixed as of May&nbsp;16, 2008.</TD>
</TR>

</TABLE>
</DIV>

<P align="center" style="font-size: 10pt"><!-- Folio -->S-2<!-- /Folio -->
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">






<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>PLEXUS CORP.<BR>
(the &#147;Registrant&#148;)<BR>
(Commission File No.&nbsp;000-14824)</b></div>

<DIV align="center" style="font-size: 10pt; margin-top: 6pt"><B>EXHIBIT INDEX<BR>
TO<BR>
FORM S-8 REGISTRATION STATEMENT</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="5%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="28%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Filed</B></TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #ffffff"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff"><B>Description</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #ffffff"><B>Incorporated Herein by Reference To</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Herewith</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Restated Articles of
Incorporation of Plexus
Corp., as amended through
March&nbsp;13, 2001
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;3(i) to the Registrant&#146;s
Quarterly Report on Form&nbsp;10-Q for
the quarter ended March&nbsp;31, 2001.</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws
of Plexus Corp., adopted on
February&nbsp;13, 2008
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;3.1 to the Registrant&#146;s
Current Report on Form&nbsp;8-K, dated
February&nbsp;13, 2008.</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated
Shareholder Rights Agreement,
dated as of August&nbsp;13, 1998,
(as amended through November
14, 2000) between Plexus and
Firstar Bank, N.A. (n/k/a US
Bank, N.A.) as Rights Agent,
including form of Rights
Certificates
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;1 to the Registrant&#146;s Form
8-A/A, filed on December&nbsp;6,&nbsp;2000.</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.4
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Agreement of Substitution and
First Amendment to the
Amended and Restated
Shareholder Rights Agreement
dated as of December&nbsp;5, 2002
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;4.2(b) to the Registrant&#146;s
Annual Report on Form&nbsp;10-K for the
fiscal year ended September&nbsp;30,
2002.</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Plexus Corp. 2008 Long-Term
Incentive Plan
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Appendix&nbsp;A to Registrant&#146;s
Definitive Proxy Statement for its
2008 Annual Meeting of
Shareholders on Schedule&nbsp;14A,
filed on December&nbsp;17, 2007.</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Quarles &#038; Brady LLP
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">X</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of
PricewaterhouseCoopers LLP
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">X</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Quarles &#038; Brady LLP
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Contained in
Opinion filed as
Exhibit&nbsp;5</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Powers of Attorney
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Contained in
Signatures page to
this Registration
Statement</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><!-- Folio -->E-1<!-- /Folio -->
</DIV>

</BODY>
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sv8
Registration No. 333-
As filed with the United States Securities and Exchange Commission on May 16, 2008
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
PLEXUS CORP.
(Exact name of registrant as specified in its charter)
Wisconsin
39-134447
(State or other jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
55 Jewelers Park Drive
Neenah, Wisconsin
54957-0156
(Address of Principal Executive Offices)
(Zip Code)
PLEXUS CORP.
2008 LONG-TERM INCENTIVE PLAN
(Full title of the plan)
ANGELO M. NINIVAGGI
Copy to:
Vice President, General Counsel and Secretary
KENNETH V. HALLETT
PLEXUS CORP.
Quarles & Brady LLP
55 Jewelers Park Drive
411 East Wisconsin Avenue
P.O. Box 156
Milwaukee, Wisconsin 53202
Neenah, Wisconsin 54957-0156
(Name and address of agent for service)
(920) 722-3451
(Telephone number, including area code, of agent for service)
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. (Check one):
Large accelerated filer
þ
Accelerated filer
o
Non-accelerated filer
o
(Do not check if a smaller reporting company)
Smaller reporting company
o
CALCULATION OF REGISTRATION FEE
Proposed
Proposed
Maximum
Maximum
Title of Securities to be
Amount to be
Offering Price
Aggregate
Amount of
Registered
Registered (1)
Per Share
Offering Price
Registration Fee
Common Stock,
par value $.01 per share
5,500,000 shares
(2
)
$
138,842,695
(2)
$
5,456.52
Preferred Stock Purchase Rights
(3
)
(3
)
(3)
(3)
(1)
The Plexus Corp. 2008 Long-Term Incentive Plan (the "Plan") provides by its terms for the
issuance of up to 5,500,000 shares of the Registrant's Common Stock, par value $.01 per share
(the "Common Stock"). The Plan provides for possible adjustment of the number of and class of
shares which may be delivered under the Plan, and in the number and class of and/or price of
shares subject to outstanding Stock Options, Stock Appreciation Rights ("SARs"), Restricted
Stock and Performance Stock, in the event of certain capital or other changes affecting the
Common Stock. Thus, in addition to the above stated 5,500,000 shares, pursuant to Rule 416(c)
under the Securities Act of 1933, this Registration Statement also covers an indeterminate
number of shares of Common Stock that may become subject to the Plan by means of any such
adjustment.
(2)
Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(h)
under the Securities Act of 1933, at the rate of $39.30 per million. The offering price is
based on Stock Options and SARs for 134,250 shares, which were issued pursuant to the Plan on
April 28, 2008, at $24.21 per share, and the remaining 5,365,750 shares based upon $25.27 per
share, which is the average of the high and low sales prices of the Common Stock, as reported
on the NASDAQ Global Select Market on May 9, 2008. The actual offering price for future
awards will be determined in accordance with the terms of the Plan.
(3)
One Preferred Stock Purchase Right is issued in tandem with each share of Common Stock. The
value attributable to the Preferred Stock Purchase Rights is reflected in the market price of
the Common Stock to which the Rights are attached. Includes registration of shares of the
Registrant's Preferred Stock and Common Stock underlying such Rights. No separate
consideration will be received for the Rights, which initially will trade together with the
Common Stock.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
Information specified in Part I of Form S-8 (Items 1 and 2) will be sent or given to Plan
participants as specified by Rule 428(b)(1) under the Securities Act of 1933, as amended.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents filed by Plexus Corp. (the "Registrant") (Commission File No.
000-14824) with the Securities and Exchange Commission pursuant to Section 13 of the Securities
Exchange Act of 1934, as amended, are incorporated herein by reference:
(a) The Registrant's Annual Report on Form 10-K for the fiscal year ended September 29, 2007;
(b) The Registrant's Quarterly Reports on Form 10-Q for the quarters ended December 29, 2007,
and March 29, 2008;
(c) The Registrant's Current Reports on Form 8-K dated November 15, 2007, January 3, 2008,
February 13, 2008, February 25, 2008, and April 4, 2008;
(d) The description of the Registrant's Common Stock contained in the Registrant's
Registration Statement on Form 8-A, dated July 18, 1986, as amended by Amendment No. 2 thereto
dated May 20, 1999; and
(e) The description of the Registrant's Preferred Stock Purchase Rights contained in the
Registrant's Registration Statement on Form 8-A, dated August 17, 1998, as amended by Amendment No.
1 thereto dated December 6, 2000.
All documents subsequently filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and
15(d) of the Securities Exchange Act of 1934, prior to the filing of a post-effective amendment
which indicates that all securities offered hereby have been sold or which deregisters all
securities then remaining unsold, shall be deemed to be incorporated by reference herein and to be
a part hereof from the date of the filing of such documents.
Any statement contained in a document incorporated or deemed to be incorporated by reference
herein shall be deemed to be modified or superseded for purposes hereof to the extent that a
statement contained herein or in any other subsequently filed document which also is or is deemed
to be incorporated by reference herein modifies or supersedes such statement. Any statement so
modified or superseded shall not be deemed, except as so modified or superseded, to constitute a
part hereof.
-2-
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
Not applicable.
Item 6. Indemnification of Directors and Officers.
The Registrant is incorporated under the Wisconsin Business Corporation Law (the "WBCL"). The
WBCL includes provisions providing for indemnification by a corporation of a director or officer
against certain liabilities and expenses incurred by him or her in any proceeding (whether
threatened, pending, or completed, and whether brought by the Registrant or any other person) to
which he or she was a party because of being a director or officer. Under Section 180.0851(1) of
the WBCL, the Registrant is required to indemnify a director or officer, to the extent such person
is successful on the merits or otherwise in the defense of a proceeding, for all reasonable
expenses incurred in the proceeding if such person was a party because he or she was a director or
officer of the Registrant. In all other cases, the Registrant is required by Section 180.0851(2)
of the WBCL to indemnify a director or officer against liabilities (including, among other things,
judgments, penalties, fines and reasonable expenses) incurred in a proceeding to which such person
was a party because he or she was an officer or director of the Registrant, unless liability was
incurred because he or she breached or failed to perform a duty to the Registrant and the breach or
failure constitutes any of the following: (i) a willful failure to deal fairly with the Registrant
or its shareholders in connection with a matter in which he or she has a material conflict of
interest; (ii) a violation of criminal law, unless he or she had reasonable cause to believe his or
her conduct was lawful or no reasonable cause to believe his or her conduct was unlawful; (iii) a
transaction from which he or she derived an improper personal profit; or (iv) willful misconduct.
Section 180.0858(1) of the WBCL provides that, subject to certain limitations, the mandatory
indemnification provisions do not preclude any additional right to indemnification or allowance of
expenses that a director or officer may have under the Registrant's articles of incorporation,
bylaws, a written agreement or a resolution of the Board of Directors or shareholders.
Section 180.0851(2)(c) of the WBCL specifies that the termination of a proceeding by judgment,
order, settlement, or conviction, or upon a plea of no contest or an equivalent plea, does not, by
itself, create a presumption that indemnification is not required. Section 180.0853 of the WBCL
permits the Registrant to pay or reimburse reasonable expenses as incurred if the director or
officer affirms his or her good faith belief that he or she has not breached or failed to perform
his or her duties to the corporation and undertakes to make repayment to the extent it is
ultimately determined that indemnification is not required.
Section 180.0859 of the WBCL provides that it is the public policy of the State of Wisconsin
to require or permit indemnification, allowance of expenses and insurance to the extent required or
permitted under Sections 180.0850 to 180.0858 of the WBCL for any liability incurred in connection
with a proceeding involving a federal or state statute, rule or regulation regulating the offer,
sale or purchase of securities.
-3-
Section 180.0828 of the WBCL provides that, with certain exceptions, a director is not liable
to a corporation, its shareholders, or any person asserting rights on behalf of the corporation or
its shareholders, for damages, settlements, fees, fines, penalties or other monetary liabilities
arising from a breach of, or failure to perform, any duty resulting solely from his or her status
as a director, unless the person asserting liability proves that the breach or failure to perform
constitutes any of the four exceptions to mandatory indemnification under Section 180.0851(2)
referred to above.
Under Section 180.0833 of the WBCL, directors of the Registrant against whom claims are
asserted with respect to the declaration of an improper dividend or other distribution to
shareholders to which they assented are entitled to contribution from other directors who assented
to such distribution and from shareholders who knowingly accepted the improper distribution, as
provided therein.
Article VIII of the Registrant's Bylaws contains provisions that generally parallel the
indemnification provisions of the WBCL and cover certain procedural matters not dealt with in the
WBCL. Directors and officers of the Registrant are also covered by directors' and officers'
liability insurance under which they are insured (subject to certain exceptions and limitations
specified in the policy) against expenses and liabilities arising out of proceedings to which they
are parties by reason of being or having been directors or officers.
Item 7. Exemption from Registration Claimed.
Not applicable.
Item 8. Exhibits.
See the Exhibit Index following the Signatures page in this Registration Statement, which
Exhibit Index is incorporated herein by reference.
Item 9. Undertakings.
(a) The undersigned Registrant hereby undertakes:
(1) To file, during any period in which offers or sales are being made, a post-effective
amendment to this Registration Statement:
(i)
To include any prospectus required by Section
10(a)(3) of the Securities Act of 1933;
(ii)
To reflect in the prospectus any facts or
events arising after the effective date of the Registration Statement
(or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement. Notwithstanding
the foregoing, any increase or decrease in volume of securities offered
(if the total dollar value of securities offered would not exceed that
which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the
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form of prospectus filed with the Commission pursuant to Rule 424(b)
if, in the aggregate, the changes in volume and price represent no
more than a 20% change in the maximum aggregate offering price set
forth in the "Calculation of Registration Fee" table in the effective
Registration Statement;
(iii)
To include any material information with
respect to the plan of distribution not previously disclosed in the
Registration Statement or any material change to such information in
the Registration Statement;
Provided, however
, that paragraphs (a)(1)(i) and (a)(1)(ii) of this section do not apply if
the information required to be included in a post-effective amendment by those paragraphs is
contained in reports filed with or furnished to the Commission by the Registrant pursuant to
Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by
reference in the Registration Statement.
(2) That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
(3) To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
....
(5) That, for the purpose of determining liability under the Securities Act of 1933 to any
purchaser:
(i) If the Registrant is relying on Rule 430B:
(A) Each prospectus filed by the registrant pursuant to Rule 424(b)(3)
shall be deemed to be part of the registration statement as of the date the
filed prospectus was deemed part of and included in the registration
statement; and
(B) Each prospectus required to be filed pursuant to Rule 424(b)(2),
(b)(5), or (b)(7) as part of a registration statement in reliance on Rule
430B relating to an offering made pursuant to Rule 415(a)(1)(i), (vii), or
(x) for the purpose of providing the information required by section 10(a)
of the Securities Act of 1933 shall be deemed to be part of and included in
the registration statement as of the earlier of the date such form of
prospectus is first used after effectiveness or the date of the first
contract of sale of securities in the offering described in the prospectus.
As provided in Rule 430B, for liability purposes of the issuer and any
person that is at that date an underwriter, such date shall be deemed to be
a new effective date of the registration statement relating to the
securities in
-5-
the registration statement to which that prospectus relates, and the
offering of such securities at that time shall be deemed to be the initial
bona fide offering thereof.
Provided, however
, that no statement made in a
registration statement or prospectus that is part of the registration
statement or made in a document incorporated or deemed incorporated by
reference into the registration statement or prospectus that is part of the
registration statement will, as to a purchaser with a time of contract of
sale prior to such effective date, supersede or modify any statement that
was made in the registration statement or prospectus that was part of the
registration statement or made in any such document immediately prior to
such effective date; or
(ii) If the Registrant is subject to Rule 430C, each prospectus filed
pursuant to Rule 424(b) as part of a registration statement relating to an
offering, other than registration statements relying on Rule 430B or other
than prospectuses filed in reliance on Rule 430A, shall be deemed to be part
of and included in the registration statement as of the date it is first
used after effectiveness.
Provided, however
, that no statement made in a
registration statement or prospectus that is part of the registration
statement or made in a document incorporated or deemed incorporated by
reference into the registration statement or prospectus that is part of the
registration statement will, as to a purchaser with a time of contract of
sale prior to such first use, supersede or modify any statement that was
made in the registration statement or prospectus that was part of the
registration statement or made in any such document immediately prior to
such date of first use.
(6) That, for the purpose of determining liability of the Registrant under the Securities Act
of 1933 to any purchaser in the initial distribution of the securities:
The undersigned Registrant undertakes that in a primary offering of
securities of the undersigned Registrant pursuant to this Registration
Statement, regardless of the underwriting method used to sell the securities
to the purchaser, if the securities are offered or sold to such purchaser by
means of any of the following communications, the undersigned Registrant
will be a seller to the purchaser and will be considered to offer or sell
such securities to such purchaser:
(i) Any preliminary prospectus or prospectus of the undersigned Registrant
relating to the offering required to be filed pursuant to Rule 424;
(ii) Any free writing prospectus relating to the offering prepared by or on
behalf of the undersigned Registrant or used or referred to by the
undersigned Registrant;
(iii) The portion of any other free writing prospectus relating to the
offering containing material information about the undersigned Registrant
-6-
or its securities provided by or on behalf of the undersigned Registrant;
and
(iv) Any other communication that is an offer in the offering made by the
undersigned Registrant to the purchaser.
(b) The undersigned Registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, each filing of the Registrant's annual report pursuant
to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable,
each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Securities
Exchange Act of 1934) that is incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona fide offering
thereof.
....
(h) Reference is made to the indemnification provisions described in Item 6 of this
Registration Statement.
Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the Registrant pursuant to the
foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred or paid by a
director, officer or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the Registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
-7-
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and
has duly caused this Registration Statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of Neenah, State of Wisconsin, on May 16, 2008.
PLEXUS CORP.
(Registrant)
By:
/s/ Dean A. Foate
Dean A. Foate
President and Chief Executive Officer
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints Dean A. Foate, Ginger M. Jones and Angelo M. Ninivaggi, and each of them, his or her
true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution,
for him or her and in his or her name, place and stead, in any and all capacities, to sign any
and all amendments (including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, and any other regulatory authority, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each
and every act and thing requisite and necessary to be done in and about the premises, as fully to
all intents and purposes as he might or could do in person, hereby ratifying and confirming all
that said attorneys-in-fact and agents or any of them, or their substitutes, may lawfully do or
cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities and on the date indicated.*
Name
Capacity
/s/ Dean A. Foate
President, Chief Executive Officer and
Dean A. Foate
Director (Principal Executive Officer)
/s/ Ginger M. Jones
Vice President and Chief Financial Officer
Ginger M. Jones
(Principal Financial Officer)
/s/ Simon J. Painter
Corporate Controller (Principal Accounting
Simon J. Painter
Officer)
S-1
Name
Capacity
/s/ Ralf R. Böer
Director
Ralf R. Böer
/s/ Stephen P. Cortinovis
Director
Stephen P. Cortinovis
/s/ David J. Drury
Director
David J. Drury
/s/ Peter Kelly
Director
Peter Kelly
/s/ John L. Nussbaum
Director
John L. Nussbaum
/s/ Michael V. Schrock
Director
Michael V. Schrock
/s/ Dr. Charles M. Strother
Director
Dr. Charles M. Strother
*
Each of these signatures is affixed as of May 16, 2008.
S-2
PLEXUS CORP.
(the "Registrant")
(Commission File No. 000-14824)
EXHIBIT INDEX
TO
FORM S-8 REGISTRATION STATEMENT
Exhibit
Filed
Number
Description
Incorporated Herein by Reference To
Herewith
4.1
Restated Articles of
Incorporation of Plexus
Corp., as amended through
March 13, 2001
Exhibit 3(i) to the Registrant's
Quarterly Report on Form 10-Q for
the quarter ended March 31, 2001.
4.2
Amended and Restated Bylaws
of Plexus Corp., adopted on
February 13, 2008
Exhibit 3.1 to the Registrant's
Current Report on Form 8-K, dated
February 13, 2008.
4.3
Amended and Restated
Shareholder Rights Agreement,
dated as of August 13, 1998,
(as amended through November
14, 2000) between Plexus and
Firstar Bank, N.A. (n/k/a US
Bank, N.A.) as Rights Agent,
including form of Rights
Certificates
Exhibit 1 to the Registrant's Form
8-A/A, filed on December 6, 2000.
4.4
Agreement of Substitution and
First Amendment to the
Amended and Restated
Shareholder Rights Agreement
dated as of December 5, 2002
Exhibit 4.2(b) to the Registrant's
Annual Report on Form 10-K for the
fiscal year ended September 30,
2002.
4.5
Plexus Corp. 2008 Long-Term
Incentive Plan
Appendix A to Registrant's
Definitive Proxy Statement for its
2008 Annual Meeting of
Shareholders on Schedule 14A,
filed on December 17, 2007.
5
Opinion of Quarles & Brady LLP
X
23.1
Consent of
PricewaterhouseCoopers LLP
X
23.2
Consent of Quarles & Brady LLP
Contained in
Opinion filed as
Exhibit 5
24
Powers of Attorney
Contained in
Signatures page to
this Registration
Statement
E-1