Seagate BARRACUDA 2LP ST31250W/WD/WC/DC - Manual (Page 48)

46 Barracuda 2LP Installation Guide, Rev. E
Figure 15b. Additional jumper options
J2
J4
J4
Pin 1
Pin 1 (front view of J4)
Pin 2
Pin 1
SCSI ID = 0
Fault LED pin (–)
SCSI ID = 1
Vendor Unique
SCSI ID = 2
SSREF (+)
SCSI ID = 3
Unit Active LED pin (–)
Not used
Ground
+5 volts
Not connected
Reserved
WC/DC drives