Hawk 2 (Wide bus) Family Install Guide, Rev. C
DC Power
Connector
Pin
1P
2P
3P
4P
Power
+12V
+12V ret
+ 5V ret
+ 5V
J1
1P2P3P4P
68 Pin SCSI I/O
Connector
J1-Auxiliary
Figure 1. DC power connection, 68 pin SCSI I/O
connector
Model ST12400WC model drives receive power from
the host computer through the 80 pin combined SCSI
I/O and power connector (not shown, since a separate
DC power cable not required). No separate DC power
connector is provided on the drive.
SCSI address selection
On "W" and "WD" model drives
, make sure that the
SCSI bus address jumper plugs are properly set for the
bus address assigned to the drive. In some systems, a
cable plugs into either J6 or J1auxiliary, so drive ID can
be set at some remote location. See figures 3a and 3b
showing the bus address select header and the jumper
configurations that select addresses 0 through 15.
Typically the primary boot device is set to ID 0, and the
subsequent SCSI drives are jumpered in ascending
order. Bus addresses 0 through 14 should be used
(the host adapter probably uses address 15).
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