Seagate CHEETAH 18 ST118202LW/LC Installation Manual page 45

Cheetah 18 Installation Guide, Rev. A
68 Pin
SCSI I/O Connector
J1
SCSI Address A0
SCSI Address A1
SCSI Address A2
SCSI Address A3
No connection
+5V
Fault LED*
Vendor Unique*
Reserved
Activity LED*
Ground
* These pins are driven low for
250 ms after PWR ON or
RESET to allow jumper
selectable SCSI ID as shown
to the right.
Figure 13. Additional jumper options
Figure 14. Alternate ID select and LED connection
Pin 1
J5/J1A [2][4]
Pin 12
J1A Pin 1
LW drives
Pin 1
4P 3P 2P
J1-DC Power
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
SCSI ID = 8
SCSI ID = 9
SCSI ID = 10
SCSI ID = 11
SCSI ID = 12
SCSI ID = 13
SCSI ID = 14
SCSI ID = 15
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1P