Barracuda 4LP Installation Guide, Rev. B 43
W/WD drives
Terminator power
There are three possible terminator power (TP) configurationsfor “W” model drives (see Figure 14). You will not normally needto change this option and can leave the drive configured as itwas shipped from the factory.There are two possible terminator power (TP) configurations for“WD” model drives (see Figure 14).Figure 14. Setting terminator power jumpers

Term. Power to SCSI Bus

Term. Power from Drive (default)

“W” model drives

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)

“WD” model drives

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