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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 HFJ565iZjPlYPt6EEHwfsg==

<SEC-DOCUMENT>0001181431-09-034854.txt : 20090709
<SEC-HEADER>0001181431-09-034854.hdr.sgml : 20090709
<ACCEPTANCE-DATETIME>20090709172855
ACCESSION NUMBER:		0001181431-09-034854
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090529
FILED AS OF DATE:		20090709
DATE AS OF CHANGE:		20090709

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SALZMAN ALAN E
		CENTRAL INDEX KEY:			0001098349

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-25699
		FILM NUMBER:		09937806

	MAIL ADDRESS:	
		STREET 1:		C/O VANTAGEPOINT
		STREET 2:		1001 BAY HILL DR #300
		CITY:			SAN BRUNO
		STATE:			CA
		ZIP:			94066

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PLX TECHNOLOGY INC
		CENTRAL INDEX KEY:			0000850579
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				943008334
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1116

	BUSINESS ADDRESS:	
		STREET 1:		870 MAUDE AVENUE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085
		BUSINESS PHONE:		4087749060

	MAIL ADDRESS:	
		STREET 1:		870 MAUDE AVENUE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>rrd247716.xml
<DESCRIPTION>ALAN SALZMAN FORM 3
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2009-05-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000850579</issuerCik>
        <issuerName>PLX TECHNOLOGY INC</issuerName>
        <issuerTradingSymbol>PLXT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001098349</rptOwnerCik>
            <rptOwnerName>SALZMAN ALAN E</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VANTAGEPOINT VENTURE PARTNERS</rptOwnerStreet1>
            <rptOwnerStreet2>1001 BAYHILL DRIVE, SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>SAN BRUNO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94066</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3815240</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F3"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">326,121 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV, L.P. (&quot;VPVP IV&quot;), 11,857 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV Principals Fund, L.P. (&quot;VPVP IV Principals&quot;) and 3,309,299 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV (Q), L.P. (&quot;VPVP IV (Q)&quot;), respectively. VantagePoint Venture Associates IV, L.L.C. is the General Partner of VPVP IV, VPVP IV Principals and VPVP IV (Q) and disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interests therein.</footnote>
        <footnote id="F2">18,228 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners III, L.P. (&quot;VPVP III&quot;) and 149,735 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners III (Q), L.P. (&quot;VPVP III (Q)&quot;), respectively. VantagePoint Venture Associates III, L.L.C. is the General Partner for VPVP III and VPVP III (Q) and disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interests therein.</footnote>
        <footnote id="F3">The Reporting Person is a managing member of VantagePoint Venture Associates III, L.L.C. and VantagePoint Venture Associates IV, L.L.C. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interests therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Alan E. Salzman</signatureName>
        <signatureDate>2009-07-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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