According to System Profiler under 9.22 it is an ATTO PCIExpress SC SCSI card. System Profiler won't run under Jaguar for some reason. That model does not appear under the list of discontinued products on ATTO's web site. If memory serves me right this card came out of a 9600/300.

Somewhere in my stash of parts I have another ATTO SCSI card from a Beige G3 MT and an Adaptec 2940UW-series card that came from a Mac.