EXHIBIT 99.1

                                  CERTIFICATION
                       PURSUANT TO 18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

         In connection with the Quarterly Report of PLX Technology, Inc. (the
"Company") on Form 10-Q for the period ended March 31, 2003 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I, Michael
J. Salameh, President of the Company, certify as of the date hereof, solely for
purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that:

                  The Report fully complies with the requirements of section
                           13(a) or 15(d), as applicable, of the Securities
                           Exchange of 1934; and

                  The information contained in the Report fairly presents, in
                           all material respects, the financial condition and
                           results of operations of the Company at the dates and
                           for the periods indicated.

         Date: May 2, 2003

By:               /s/ Michael J. Salameh
                  ---------------------------------------------------
                  Michael J. Salameh
                  President