Exhibit 32.1

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

I, Robert Y. L. Mao, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of 3Com Corporation on Form 10-Q for the fiscal quarter ended February 26, 2010 fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of 3Com Corporation.



Date: April 6, 2010	By:	/s/ Robert Y. L. Mao
		Name:	Robert Y. L. Mao
		Title:	Chief Executive Officer

I, Jay Zager, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of 3Com Corporation on Form 10-Q for the fiscal quarter ended February 26, 2010 fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of 3Com Corporation.



Date: April 6, 2010	By:	/s/ Jay Zager
		Name:	Jay Zager
		Title:	Executive Vice President and Chief Financial Officer

3COM CORP 10-Q