CSP (CSPI) 10-Q 2021 Q3 Quarterly report

Exhibit 32.1

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 on Form 10-Q of CSP Inc. (the “Company”) for the quarter endedJune 30, 2021, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned Chief Executive Officer, President and Chairman and Chief Financial Officer of the Company, certifies, to the best knowledge and belief of the signatory, pursuant to 18 U.S.C. Section1350, as adopted pursuant to Section906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section13(a) or 15(d) 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.

August 12, 2021	By:	/s/ Victor Dellovo
		Victor Dellovo
		Chief Executive Officer;
		President and Director
August 12, 2021	By:	/s/ Gary W. Levine
		Gary W. Levine
		Chief Financial Officer