Adaptec AHA-2940U2B Ultra2-LVD/SE PCI cards for MAC
About the Apple/Adaptec AHA-2940U2B
The Apple/Adaptec AHA-2940U2B is an Ultra2 LVD SCSI Single-Channel
SCSI board. It is discussed in Apple TIL articles 58204, and 58256.
This card has a standard 68-pin MicroD external interface, and one
internal 68-pin interface. To ensure best compatibility, flash this
board with the downloadable 2940U2B v1.2 Flash Utility available on
the Apple website. Please check your board before you flash it.
most likely it is already running the latest firmware. In the event
you experience trouble with your board, running the flasher utility
is a useful diagnostic procedure. Note that the Apple version of
the 2940U2, known as the U2B, lacks the problematic Adaptec
"SpeedFlex" circuitry found on the commercial 2940U2W
version which was intended to make it possible to run narrow
single-ended devices on a wide LVD card. In our opinion, SpeedFlex
was a great idea that intermittently worked as advertised and
caused more problems than it resolved. Apple recommends that you
use only LVD devices on this card.
Inspection Notes: OEM Card