UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

(MARK ONE)

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2013. 

OR

[   ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM ___________ TO _____________

Commission file number 000-25699

PLX Technology, Inc.

(Exact name of Registrant as Specified in its Charter)

Delaware	94-3008334
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification Number)

870 W. Maude Avenue

Sunnyvale, California  94085

(408) 774-9060

(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes[X] No[  ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes[X]  No[  ]

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a small reporting company. See definition of “large accelerated filer”, "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (Check One):

Large accelerated filer [  ]Accelerated filer [X]Non-accelerated filer [  ] Smaller Reporting Company [  ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes [  ]    No [X]

As of March 31, 2013 there were 45,567,974 shares of common stock, par value $0.001 per share, outstanding.

EXPLANATORY NOTE

PLX Technology, Inc. (the “Company,” “PLX,” “we,” “us” or “our”) is filing this Amendment No. 1 on Form 10-Q/A (this “Amendment”) to amend our 10-Q for the period ended March 31, 2013, filed on May 8, 2013 (the “Original Filing”), to append the XBRL files that were not included in the Original Filing due to a filing error.

No other changes have been made to the Original Filing. This Amendment No.1 does not reflect events that may have occurred subsequent to the Original Filing date, and does not modify or update in any way disclosures made in the Form 10-Q for the fiscal quarter ended March 31, 2013.

Part II.  Other Information

Item 6.  Exhibits

(a)  Exhibits required as part of this report are listed in the index appearing after the signature page.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

PLX TECHNOLOGY, INC.

Date: May 8, 2013

By     /s/ Arthur O. Whipple

         Arthur O. Whipple

         Chief Financial Officer

         (Principal Financial Officer and duly authorized signatory)

EXHIBIT INDEX

Exhibit Number	Description
3.2	Bylaws of PLX Technology, Inc., as amended and restated as of March 28, 2013, incorporated by reference to Exhibit 3.2 in our Form 8-K filed April 1, 2013.

EXHIBITS 10.1 THROUGH 32.2 WERE PREVIOUSLY FILED.

10.1	Amendment to Loan and Security Agreement, dated as of April 22, 2013, by and between PLX Technology, Inc. and Silicon Valley Bank.
10.2	PLX Technology, Inc. 2013 Variable Compensation Plan.
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, Chapter 63 of Title 18, United States Code, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, Chapter 63 of Title 18, United States Code, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

THE FOLLOWING EXHIBITS ARE FILED HEREWITH:

101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema Document
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase Document

*  XBRL (Extensible Business Reporting Language) information is furnished and not filed herewith, is not a part of a registration statement or Prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, is deemed not filed for purposes of section 18 of the Securities Exchange Act of 1934, and otherwise is not subject to liability under these sections.