And the next part from the machine: another SCSI controller, because one on-board and another one was apparently not enough for whoever owned the system back in the day. 馃槀
This is a caching RAID controller powered by an i960 RISC chip running at 25 MHz. It was an optional add-on for this machine as well.
Sadly, it's the gelded version with only one of the three possible channels assembled.