SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* SALZMAN ALAN E (Last) (First) (Middle) C/O VANTAGEPOINT VENTURE PARTNERS 1001 BAYHILL DRIVE, SUITE 300 (Street) SAN BRUNO CA 94066 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 05/29/2009	3. Issuer Name and Ticker or Trading Symbol PLX TECHNOLOGY INC [ PLXT ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	3,815,240(1)(2)	I(3)	See Footnotes

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 326,121 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV, L.P. ("VPVP IV"), 11,857 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV Principals Fund, L.P. ("VPVP IV Principals") and 3,309,299 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners IV (Q), L.P. ("VPVP IV (Q)"), 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.

2. 18,228 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners III, L.P. ("VPVP III") and 149,735 shares of Common Stock of Issuer are beneficially owned by VantagePoint Venture Partners III (Q), L.P. ("VPVP III (Q)"), 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.

3. 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.

	/s/ Alan E. Salzman	07/09/2009
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
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