Apple Mac 8600 - Manual (Page 29)

Basics Ultra Wide SCSI - 27
If you are connecting an additional unterminated device to
the Fast SCSI-2 bus in a WS 9650, leave the termination
block attached to the end of the SCSI ribbon cable. If the
device you want to connect is terminated, remove the
termination block and attach the device to the end of the SCSI
ribbon cable.
Ultra Wide SCSI
The Workgroup Server 9650/233 and 9650/350 ship
with a PCI Ultra SCSI JackHammer•SE card pre-installed.
This card is a high performance, single-ended, accelerated
PCI to SCSI host adapter card that dramatically increases
performance of SCSI devices connected to it.
The JackHammer•SE card is a PCI device that creates a
high-speed interface between the CPU and disk drive. The