Seagate BARRACUDA 2LP ST31250W/WD/WC/DC - Manual (Page 35)

Barracuda 2LP Installation Guide, Rev. E 33
Figure 5. Setting the SCSI ID
J4
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
J4
Pin 1
Pin 1
SCSI ID = 0 (default)
(front view of J4)
Pin 2
Setting the SCSI ID jumpers
Use the J4 connector to set the SCSI ID (see Figure 5).
To change the SCSI ID, install jumpers on the appropriate
pins as shown in the illustration.
N/ND drives