HP Visualize J200 Reference Manual page 72

Termination Strategy
Any single–ended standard SCSI–2 device connecting to the system board must use a 50–pin
high–density thumb screw connector on the end connecting to the system board, and a 50–pin
low–density bail lock connector on the other end. If you attach a second SCSI–2 device, the cable
must have low–density connectors on each end.
Any fast, wide differential SCSI–3 device connecting to the system board must use a 68–pin
high–density thumb screw connector on both ends.
The last device connected to the SCSI bus must be terminated with a SCSI terminator. All of the
devices listed ship without terminators. If you do not already have a SCSI terminator, you must order
terminator K2291 (for 50–pin connectors) or C2905A (for 68–pin connectors) from
Hewlett–Packard.
When attaching external SCSI devices, be sure to terminate the last device on the
external SCSI bus. If no external devices are attached, the SCSI connector on the rear of the system must
be terminated with the terminator that was shipped with your workstation.
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Figure 5–1 Rear Panel SCSI Connectors with Terminators Attached