Toshiba Magnia 3310 User Manual page 89

Connecting Hardware Devices
4 Position the rails on the SCSI device and secure them with two screws each.
HINT: There are three types of predrilled holes on each rail. In most cases you will
use the round holes when attaching the rails to a SCSI device.
Attaching the rails to the SCSI device
5 Partially position the device in the empty device bay slot, and then connect the
power and signal cables.
Connecting the power and signal cables
Verify pin locations using the device's documentation manual.
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SCSI devices