Compaq SW TL881 DLT Mini-Lib/1 Manual page 18

10 Compaq StorageWorks TL881/TL891 Family MiniLibrary System Drive Upgrade Procedure
8. Connect the unused connector on the SCSI cable to the drive just
installed.
9. Install the RS-422 cable supplied with the kit, sliding it under the
clamps so that the connector is adjacent to the connector on top of the
new drive.
10. Install the RS-422 cable removed in step 3 over the top of the new
RS-422 cable so that the connector is adjacent to the connector on top of
the original drive.
11. Connect the RS-422 cables to the connectors on the top of the drives,
through the holes in the top of the drive caddy assembly.
12. Replace the drive caddy assembly as described in "Removing and
Replacing the Drive Caddy Assembly."