Apple WS 9650 manual Ultra Wide Scsi

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