The board has 4 slots for cache memory and improves the performance of your system. (2x 4mb installed)

This listing consists of two boards, one is a very capable SCSI controller, with support for hardware raid, and the other is for local memory, caching.

Back in the day this would make a massive improvement in access time almost as dramatic as going from mechanical media to solid-state.

This is an old board and so mostly interesting for people who are building retro boxes.