The AHA-2940 series adapter may not properly function unless its' BIOS version is correct.
In the table below, items marked with * indicate that the BIOS version varies based upon the existing BIOS version on the card. 1.1x versions will require version 1.16. 1.2x versions will require 1.23. BIOS versions ending in an S were produced by an OEM, contact the manufacturer for upgrades. Adaptec technical support can be contacted at (408) 934-7274.
|Base model AHA-2940|
|2940 with Wide support|
|AHA-2940U||Flash||OEM||OEM version with Ultra|
|AHA-2940UW||Flash||1.23||2940 with Ultra and Wide|
|AHA-2940AU||Chip||1.30||Replaces original 2940, adds Ultra|
|AHA-3940||Chip||1.14||Base model AHA-3940|
|AHA-3940UW||Chip||1.24||3940 with Ultra Wide|