Figure 12. J5 Jumper Header (On Lw Models Only) - Seagate Barracuda ST318418N Product Manual

38
Drive HDA (rear view, PCB facing downward)
68 Pin
SCSI I/O Connector
J1
Figure 12. J5 jumper header (on LW models only)
Pin 1 +5V Ground
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
Reserved
Host [4]
N.C.
Alternate
11 9 7 5 3 1
Usage Plug
+5V 12 10 8 6 4 2
N.C.
+5V
Ground
[6]
Drive Activity LED
[4]
Dashed area is optional host circuitry (external to the
drive) connected to host supplied optional usage plug.
Barracuda 36ES2 Product Manual, Rev. B
J5 [1] [2]
Pin 1
4P 3P
[2] J1-DC Power
(default)
For ID selection use
jumpers as shown or
connect a cable for
remote switching as
shown below.
A 3 A 2 A 1 A 0
Pins 1, 3, 5, and 7 are
optional connections to
switching circuits in host
equipment to establish
drive ID.
A 0 A 1 A 2 A 3
Pins 2, 4, 6, and 8 are
normally not grounded.
They are driven low (ground)
for 250 ms after a Reset
or PWR ON to allow drive to
read SCSI ID selected.
2P 1P
PCB
Remote Switches