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Barracuda 9 Installation Guide, Rev. A 35
W/WD drives
Terminator power
There are three possible terminator power configurations for
ST19171W drives (see Figure 12). You will not normally need to
change this option and can leave the drive configured as it was
shipped from the factory.
There are two possible terminator power configurations for
ST19171WD drives (see Figure 12).
Figure 12. Setting terminator power jumpers
Term. Power to SCSI Bus
Term. Power from Drive (default)
ST19171W
T
E
D
S
M
E
W
P
P
D
R
E
S
T
P
T
P
Host adapter or other device provides
term. power to external terminator.
Term. Power to SCSI Bus (default)
ST19171WD
Term. Power from SCSI Bus
Position A
SCSI I/O
Connector
DC Power
Connector
J2
Drive
Front
J6
J1
J2 Jumper Type
(enlarged to
show detail)
Pin 1
J2