46Barracuda 2LP Installation Guide, Rev. E
WC/DC drives
Pin 1
J2
J4
J4 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
