Product manual

54 Barracuda 9 Product Manual, Rev. C
Figure 14. Physical interface for “W” and “WD” model drives (68-pin J1 SCSI I/O connector)
Note: See Table 16 and 17 for DC power pin assignments.
Figure 15. Physical interface for “WC” and “DC” model drives (80-pin J1 SCSI I/O and DC power connector)
J6
J2
J1-Auxiliary
Pin 1A
68 Pin
SCSI I/O
Connector
Pin 1P
J1-DC Power
J1
Pin 1
J1-DC Power
Pin
1P
2P
3P
4P
Power
+12V
+12V ret
+ 5V ret
+ 5V
J1
Pin 1
1P2P3P4P
J1-Auxiliary
Pin 1A
PCB
J6
J2
J1
80 Pin SCSI I/O 
and Power
Connector
Pin 1