IBM 1 U Installation Manual page 19

6.
Install the signal connectors.
a.
Remove the cover plates from the rear of the enclosure.
b.
Insert the signal connector into the opening in the enclosure; then, insert
and tighten the screws to secure the connector.
c.
For SCSI, use the tip of a pen or a straightened paper clip to set the ID
on the SCSI ID connector; then, orient the connector, insert it into the
opening, and press it firmly in place. The connector is marked "R" for
right and "L" for left.
SAS
signal
connector
screws
SAS
signal connector
SCSI
signal
connector
screws
SAS or SATA
USB
signal connector
USB
signal
connector
screws
USB
Chapter 2. Installing the tape enclosure
SCSI signal
connector
Connector plugs
SCSI
SCSI ID
connector
11