A-4
System Cabling
Figure A-2. Standard SCSI Bus Cable Routing
WIDE SCSI
CABLE (68-pins)
NARROW SCSI
CABLE (50-pins)
A
B
C
1
2
3
4
1
2
3
4
IDE CABLE
(40-pins)
The onboard narrow SCSI controller also includes a
connector located at the rear of the system for
connecting optional external SCSI devices (Figure A-
1,D). Three important rules must be followed if you
connect external narrow SCSI devices.
■ A maximum of seven narrow SCSI devices may be
connected to the onboard SCSI controller. For
example if three SCSI devices in the system cabinet
are connected to the SCSI bus, only four external
narrow SCSI devices can be connected.
■ The maximum cable length for all narrow devices
connected to the controller is 1 meter (39 inches).
■ The last external narrow SCSI device must be
terminated. Active termination is recommended.
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