Castelle 10-Q 2005 Q3 Quarterly report

EXHIBIT 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

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 Castelle (the “Company”) on Form 10-Q for the period ended September 30, 2005, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Paul Cheng, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/ Paul Cheng
Name:		Paul Cheng
Title:		Chief Financial Officer
		(Principal Financial Officer)

Date: November 4, 2005

This certification accompanies this report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed to be filed by Castelle for purposes of Section 18 of the Securities Exchange Act of 1934.

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