Scsi Backplane Board; Back Side - Gateway 7400 System Manual

SCSI backplane board

Back side

JP5: Delay start jumper
Power connector
SCSI connector
JP5: Delay start jumper controls the spin-up sequence of the drives attached
to the backplane. If you leave the delay start jumper on (enabled - default),
the drives spin up one at a time in order of their SCSI ID. If you remove the
delay start jumper, all drives spin up simultaneously, which may cause an
excessive drain on the system power supply.
JP6: Termination jumper - The backplane is designed to occupy one end of
the bus and is terminated (jumper off - default).
SCSI connector provides the point of connection for the SCSI cable from the
hot-plug controller.
Power connector provides the point of connection for the power cable from
the power supply.
10
System Features
JP6: Termination jumper