9/16/95 News Release Adaptec Announces Acquisition Charges Milpitas, Calif, - September 19, 1995 - Adaptec (NASDAQ:ADPT), announced today that it has completed its preliminary evaluation of the allocation of the purchase price to the assets acquired for its three recently announced acquisitions: Trillium Research, Inc., Future Domain Corporation and Incat Systems Software USA, Inc. Under the purchase accounting method, a one-time charge to earnings of approximately $0.55 - $0.60 will be recorded during the Company's second fiscal quarter, ending September 29, 1995, for the in-process research and development acquired. Adaptec, Inc. (NASDAQ:ADPT) designs, manufactures and markets IOwareŽ solutions to eliminate performance bottlenecks between microcomputers, networks, and peripherals. Solutions range from simple connectivity products for single-user and small-office desktops, to intelligent subsystem, high-performance SCSI, RAID and ATM products for enterprise-wide computing and networked environments. Adaptec I/O solutions are incorporated into the products of virtually all the major computer and peripheral manufacturers around the world. Founded in 1981, and headquartered in Milpitas, Calif., Adaptec is a recognized market leader in high-performance I/O technology. Adaptec currently employs approximately 1,900 people, and with its global distributionnetwork, serves customers worldwide. Adaptec's World Wide Web home page address is http://www.adaptec.com. Adaptec and IOware are trademarks of Adaptec, Inc. which may be registered in some jurisdictions.