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<P align="right" style="font-size: 10pt">Registration No.&nbsp;333-_______

<P align="center" style="font-size: 10pt">As filed with the Securities and Exchange Commission on May&nbsp;13, 2005

<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>

<P align="center" style="font-size: 14pt"><B>SECURITIES AND EXCHANGE COMMISSION</B>

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


<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">


<P align="center" style="font-size: 18pt"><B>FORM S-8</B>


<P align="center" style="font-size: 12pt"><B>REGISTRATION STATEMENT</B>


<P align="center" style="font-size: 12pt"><B>UNDER</B>


<P align="center" style="font-size: 12pt"><B>THE SECURITIES ACT OF 1933</B>


<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">


<P align="center" style="font-size: 24pt"><B>PLEXUS CORP.</B>


<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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<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
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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
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Identification No.)</TD>
</TR>
<TR valign="bottom">
    <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</B></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Neenah, Wisconsin</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>54957</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>


<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">



<P align="center" style="font-size: 12pt"><B>PLEXUS CORP. 2005 EMPLOYEE STOCK PURCHASE PLAN</B>


<DIV align="center" style="font-size: 10pt">(Full title of the plan)</DIV>


<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">


<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">JOSEPH D. KAUFMAN
</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, Secretary and General Counsel
</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>


<P align="center" style="font-size: 10pt">(Name and address of agent for service)



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



<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">


<!-- link1 "CALCULATION OF REGISTRATION FEE" -->

<P align="center" style="font-size: 10pt">CALCULATION OF REGISTRATION FEE


<DIV align="center">
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    <TD width="7%">&nbsp;</TD>
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    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
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    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD><!-- VRule -->
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&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 solid #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="2"><B>Proposed Maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed Maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&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</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount to be</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Offering Price Per</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Aggregate</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&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>to be Registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Registered (1)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Share(2)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Offering Price(2)</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Registration Fee</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

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    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD 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 colspan="3" align="center" style="border-top: 2px solid #000000" nowrap>150,000 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="left" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000">(2)</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 align="left" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000">$1,840,500</TD>
    <TD 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 align="left" style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="center" style="border-top: 2px solid #000000">$217</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 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="left" 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="left" 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="left" 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="left" 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 solid #000000">&nbsp;</TD>
</TR>

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</TABLE>
</DIV>

<P>
<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="3%" nowrap align="left">(1)&nbsp;&nbsp;</TD>
    <TD>The Plan provides for the possible adjustment of the number, price and kind of shares
covered by options granted or to be granted in the event of certain capital or other changes
affecting the Registrant&#146;s Common Stock. This Registration Statement therefore covers, in
addition to the above-stated 150,000 shares, an indeterminate number of shares that may
become subject to the Plan by means of any such adjustment. Certain shares under the Plan
have been registered under Registration Statement No.&nbsp;333-37154; this Registration Statement
covers additional shares which may be issued under the Plan.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(2)&nbsp;&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;457(h), estimated solely for the purpose of computing the registration fee,
based upon $12.27 per share, which is the average of the high and low sales prices of the
Registrant&#146;s Common Stock as reported in the Nasdaq Stock Market on May&nbsp;10, 2005. The actual
offering price will be determined in accordance with the terms of the Plan.</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(3)&nbsp;&nbsp;</TD>
    <TD>One right is issued in tandem with each share of Plexus 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.</TD>
</TR>

</TABLE>


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

<P align="center" style="font-size: 10pt"><B>STATEMENT UNDER GENERAL INSTRUCTION E<BR>
REGISTRATION OF ADDITIONAL SECURITIES</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This Registration Statement on Form S-8 (the &#147;Registration Statement&#148;) is being filed pursuant
to General Instruction E to Form S-8 under the Securities Act of 1933, as amended (the &#147;Securities
Act&#148;), to register additional shares for issuance pursuant to the Plexus Corp. 2005 Employee Stock
Purchase Plan (the &#147;Employee Stock Purchase Plan&#148;). Unless otherwise noted herein, this
Registration Statement incorporates by reference the contents of the registrant&#146;s registration
statement on Form S-8 (File No.&nbsp;333-37154), as amended, and all the exhibits thereto, relating to
the Employee Stock Purchase Plan, which was previously filed with the Securities and Exchange
Commission and amended on May&nbsp;13, 2005.


<P align="center" style="font-size: 10pt">&nbsp;</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">
<!-- link1 "PART II" -->

<P align="center" style="font-size: 10pt"><B>PART II</B>



<P align="center" style="font-size: 10pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>


<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->

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



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents filed by Plexus Corp. (the &#147;registrant&#148;) (Commission File No<B>.</B>
000-44824) with the Securities and Exchange Commission pursuant to Section&nbsp;13 or 15(d) of the
Securities Exchange Act of 1934 are incorporated herein by reference:


<P>
<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="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Annual Report on Form 10-K for the fiscal year ended September
30, 2004;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Quarterly Reports on Form 10-Q for the quarterly periods ended
January&nbsp;1, 2005 and April&nbsp;2, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The Registrant&#146;s Current Reports on Form 8-K dated November&nbsp;8, 2004, November
18, 2004, February&nbsp;9, 2005, April&nbsp;1, 2005, April&nbsp;4, 2005 and
May 11, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The description of the Common Stock in the 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</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">&#149;&nbsp;&nbsp;</TD>
    <TD>The description of the Preferred Stock Purchase Rights in the Registration
Statement on Form 8-A, dated as of August&nbsp;17, 1998, as amended by Amendment No.&nbsp;1
thereto dated December&nbsp;6, 2000.</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 10pt">&nbsp;&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 Exchange Act, 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.


<P align="left" style="font-size: 10pt">&nbsp;&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.

<!-- link2 "Item&nbsp;8. Exhibits." -->

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



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;See Exhibit&nbsp;Index following the Signatures page(s) in this registration statement, which
Exhibit&nbsp;Index is incorporated herein by reference.


<P align="center" style="font-size: 10pt">&nbsp;</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">
<!-- link1 "SIGNATURES" -->

<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="left" style="font-size: 10pt">&nbsp;&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;13, 2005.


<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 colspan="3" align="left">Dean A. Foate,&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">


<!-- link1 "POWER OF ATTORNEY" -->

<P align="center" style="font-size: 10pt"><B>POWER OF ATTORNEY</B>




<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below constitutes
and appoints Dean A. Foate, F. Gordon Bitter and Joseph D. Kaufman, and each of them, his true
and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for
him and in his 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.


<P align="center" style="font-size: 10pt"><HR size="1" noshade width="26%" align="center" color="#000000">



<P align="left" style="font-size: 10pt">&nbsp;&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 align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="48%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="48%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ DEAN A. FOATE
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ STEVEN P. CORTINOVIS</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Dean A. Foate, President, Chief
Executive Officer and Director
(Principal Executive Officer)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Steven P. Cortinovis, Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ F. GORDON BITTER
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ DAVID J. DRURY</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">F. Gordon Bitter, Vice President and
Chief Financial Officer (Principal
Financial Officer)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">David J. Drury, Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ SIMON J. PAINTER
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ THOMAS J. PROSSER</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Simon J. Painter, Corporate Controller
(Principal Accounting Officer)
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Thomas J. Prosser, Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ JOHN L. NUSSBAUM
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ DR. CHARLES M. STROTHER</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">John L. Nussbaum, Chairman and Director
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Dr. Charles M. Strother, Director</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">/s/ RALF R. BOER
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">/s/ PETER KELLY</TD>
</TR>
<TR style="font-size: 1px">
    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">Ralf R. Boer, Director
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Peter Kelly, Director</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<P align="left" style="font-size: 10pt; margin-left: 9%">*Each of these signatures is affixed as of May&nbsp;13, 2005.


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

<P align="center" style="font-size: 10pt"><B>PLEXUS CORP.<BR>
(the &#147;Registrant&#148;)<BR>
(Commission File No.&nbsp;0-14553)</B>

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


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="32%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="20%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Incorporated Herein</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><B>Exhibit Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>by Reference To</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Filed 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
Plexus&#146; Quarterly
Report on Form&nbsp;10-Q
for the quarter
ended March&nbsp;31,
2001.</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">&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="left" 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">Bylaws of Plexus
Corp., as amended
through March&nbsp;7,
2001
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;3(ii) to
Plexus&#146; Quarterly
Report on Form&nbsp;10-Q
for the quarter
ended March&nbsp;31,
2001.</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">&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="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3(a)
</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&nbsp;14, 2000)
between Plexus and
Firstar Bank, N.A.
(n/k/a USBank,
N.A.) as Rights
Agent, including
form of Rights
Certificates
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;1 to
Plexus&#146; Form&nbsp;8-A/A
filed on December
6, 2000.</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">&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="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3(b)
</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
Plexus&#146; Annual
Report on Form&nbsp;10-K
for the fiscal year
ended September&nbsp;30,
2002.</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">&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="left" 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 Counsel
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;5 to
Plexus&#146; Form&nbsp;S-8/A
(Registration No.
333-37154) filed on
May&nbsp;13, 2005.</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">&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="left" 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">
    <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="left" 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 Counsel
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Contained in
Exhibit&nbsp;5 to
Plexus&#146; Form&nbsp;S-8/A
(Registration No.
333-37154), as
amended on May&nbsp;13,
2005.</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">&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="left" 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="left" valign="top">Signature Page to
this Registration
Statement</TD>
</TR>
<TR valign="bottom">
    <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="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">99
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2005 Employee Stock Purchase Plan
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Exhibit&nbsp;B to the
Registrant&#146;s Proxy
Statement dated
December&nbsp;29, 2004
for its Annual
Meeting of
Shareholders on
February&nbsp;9, 2005.</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



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

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sv8
Registration No. 333-_______
As filed with the Securities and Exchange Commission on May 13, 2005
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
(I.R.S. Employer
incorporation or organization)
Identification No.)
55 Jewelers Park Drive
Neenah, Wisconsin
54957
(Address of Principal Executive Offices)
(Zip Code)
PLEXUS CORP. 2005 EMPLOYEE STOCK PURCHASE PLAN
(Full title of the plan)
JOSEPH D. KAUFMAN
Copy to:
Vice President, Secretary and General Counsel
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)
CALCULATION OF REGISTRATION FEE
Proposed Maximum
Proposed Maximum
Title of Securities
Amount to be
Offering Price Per
Aggregate
Amount of
to be Registered
Registered (1)
Share(2)
Offering Price(2)
Registration Fee
Common Stock, par
value $.01 per
share
150,000 shares
(2)
$1,840,500
$217
Preferred Stock
Purchase Rights
(3)
(3)
(3)
(3)
(1)
The Plan provides for the possible adjustment of the number, price and kind of shares
covered by options granted or to be granted in the event of certain capital or other changes
affecting the Registrant's Common Stock. This Registration Statement therefore covers, in
addition to the above-stated 150,000 shares, an indeterminate number of shares that may
become subject to the Plan by means of any such adjustment. Certain shares under the Plan
have been registered under Registration Statement No. 333-37154; this Registration Statement
covers additional shares which may be issued under the Plan.
(2)
Pursuant to Rule 457(h), estimated solely for the purpose of computing the registration fee,
based upon $12.27 per share, which is the average of the high and low sales prices of the
Registrant's Common Stock as reported in the Nasdaq Stock Market on May 10, 2005. The actual
offering price will be determined in accordance with the terms of the Plan.
(3)
One right is issued in tandem with each share of Plexus 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.
STATEMENT UNDER GENERAL INSTRUCTION E
REGISTRATION OF ADDITIONAL SECURITIES
This Registration Statement on Form S-8 (the "Registration Statement") is being filed pursuant
to General Instruction E to Form S-8 under the Securities Act of 1933, as amended (the "Securities
Act"), to register additional shares for issuance pursuant to the Plexus Corp. 2005 Employee Stock
Purchase Plan (the "Employee Stock Purchase Plan"). Unless otherwise noted herein, this
Registration Statement incorporates by reference the contents of the registrant's registration
statement on Form S-8 (File No. 333-37154), as amended, and all the exhibits thereto, relating to
the Employee Stock Purchase Plan, which was previously filed with the Securities and Exchange
Commission and amended on May 13, 2005.
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
.
000-44824) with the Securities and Exchange Commission pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934 are incorporated herein by reference:
•
The Registrant's Annual Report on Form 10-K for the fiscal year ended September
30, 2004;
•
The Registrant's Quarterly Reports on Form 10-Q for the quarterly periods ended
January 1, 2005 and April 2, 2005;
•
The Registrant's Current Reports on Form 8-K dated November 8, 2004, November
18, 2004, February 9, 2005, April 1, 2005, April 4, 2005 and
May 11, 2005;
•
The description of the Common Stock in the Registration Statement on Form 8-A,
dated July 18, 1986, as amended by Amendment No. 2 thereto dated May 20, 1999; and
•
The description of the Preferred Stock Purchase Rights in the Registration
Statement on Form 8-A, dated as of 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 Exchange Act, 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.
Item 8. Exhibits.
See Exhibit Index following the Signatures page(s) in this registration statement, which
Exhibit Index is incorporated herein by reference.
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 13, 2005.
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, F. Gordon Bitter and Joseph D. Kaufman, and each of them, his true
and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, for
him and in his 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.*
/s/ DEAN A. FOATE
/s/ STEVEN P. CORTINOVIS
Dean A. Foate, President, Chief
Executive Officer and Director
(Principal Executive Officer)
Steven P. Cortinovis, Director
/s/ F. GORDON BITTER
/s/ DAVID J. DRURY
F. Gordon Bitter, Vice President and
Chief Financial Officer (Principal
Financial Officer)
David J. Drury, Director
/s/ SIMON J. PAINTER
/s/ THOMAS J. PROSSER
Simon J. Painter, Corporate Controller
(Principal Accounting Officer)
Thomas J. Prosser, Director
/s/ JOHN L. NUSSBAUM
/s/ DR. CHARLES M. STROTHER
John L. Nussbaum, Chairman and Director
Dr. Charles M. Strother, Director
/s/ RALF R. BOER
/s/ PETER KELLY
Ralf R. Boer, Director
Peter Kelly, Director
*Each of these signatures is affixed as of May 13, 2005.
PLEXUS CORP.
(the "Registrant")
(Commission File No. 0-14553)
EXHIBIT INDEX
TO
FORM S-8 REGISTRATION STATEMENT
Incorporated Herein
Exhibit Number
Description
by Reference To
Filed Herewith
4.1
Restated Articles
of Incorporation of
Plexus Corp., as
amended through
March 13, 2001
Exhibit 3(i) to
Plexus' Quarterly
Report on Form 10-Q
for the quarter
ended March 31,
2001.
4.2
Bylaws of Plexus
Corp., as amended
through March 7,
2001
Exhibit 3(ii) to
Plexus' Quarterly
Report on Form 10-Q
for the quarter
ended March 31,
2001.
4.3(a)
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 USBank,
N.A.) as Rights
Agent, including
form of Rights
Certificates
Exhibit 1 to
Plexus' Form 8-A/A
filed on December
6, 2000.
4.3(b)
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
Plexus' Annual
Report on Form 10-K
for the fiscal year
ended September 30,
2002.
5
Opinion of Counsel
Exhibit 5 to
Plexus' Form S-8/A
(Registration No.
333-37154) filed on
May 13, 2005.
23.1
Consent of
PricewaterhouseCoopers
LLP
X
23.2
Consent of Counsel
Contained in
Exhibit 5 to
Plexus' Form S-8/A
(Registration No.
333-37154), as
amended on May 13,
2005.
24
Powers of Attorney
Signature Page to
this Registration
Statement
99
2005 Employee Stock Purchase Plan
Exhibit B to the
Registrant's Proxy
Statement dated
December 29, 2004
for its Annual
Meeting of
Shareholders on
February 9, 2005.