Contact

Ann Desrochers
CSP Inc. MultiComputer Division
1 (800) 325-3110 ext. 2200
adesroch@cspi.com

CSP Inc. to Present at
The Wall Street Analyst Forum on June 3, 2005

BILLERICA, Massachusetts, May 12, 2005 - CSP Inc. (NASDAQ: CSPI) today announced that Chairman, President and Chief Executive Officer Alexander R. Lupinetti will address attendees at the 16th Annual Wall Street Analyst Forum on Friday, June 3, 2005 at 9:00 a.m. EDT. The conference will be held at The Princeton Club in New York City.

Lupinetti will provide an overview of the Company's business and future outlook. Company representatives may also discuss recent business and financial trends influencing the substantial growth in sales of its high-performance cluster computers for military applications and its IT integration solutions for complex IT environments.

The presentation will also be webcast live, courtesy of Vcall, and can be accessed at http://www.vcall.com/CEPage.asp?ID=91414. Additional information about the event is available by visiting the website, http://www.analyst-conference.com/ .

About CSP Inc.

Based in Billerica, Massachusetts and founded in 1968, CSP Inc. (NASDAQ: CSPI) and its subsidiaries develop and market high-performance cluster computer systems for military applications and IT integration solutions for complex IT environments. The company includes the MODCOMP, Inc. subsidiary and the CSPI MultiComputer Division.

The MultiComputer Division supplies very dense and rugged cluster computer systems with powerful real-time I/O capabilities that require minimum physical space or power. These systems are used on land, airborne and shipboard platforms in a broad array of defense applications, including software defined radio, radar, sonar and surveillance signal processing.

MODCOMP, Inc. is a multinational business that develops and markets IT integration solutions and provides network management, storage systems and network security consulting services along with the best-of-breed hardware and software products from industry leading suppliers. In addition, MODCOMP develops and markets middleware software for messaging and legacy integration.

For more information about CSP Inc., visit http://www.cspi.com or call us at 1 (800) 325-3110.

‘Safe Harbor Provision’ Statement
CSP Inc. wishes to take advantage of the 'safe harbor' provisions of the Private Securities Litigation Reform Act of 1995 with respect to statements that may be deemed to be forward-looking statements under the Act. Such forward-looking statements may include, but are not limited to, statements regarding the success of the Company and its subsidiary's products and services. The Company caution that numerous factors could cause actual results to differ materially from any forward-looking statements made by the Company. Please refer to the section on forward-looking statements included in the Company's Form 10-K filed with the Securities and Exchange Commission.