46 Barracuda 4LP Installation Guide, Rev. B

WC/DC drivesApplicable jumper options

Option jumpers are available as illustrated below.

Figure 16. Jumper options

Enable parity check of SCSI bus.
Disable parity check.
Parity Check option
Write protect = Off 
(enables writing)
Write protect = On 
(disables writing)
Write Protect option
The host system has complete 
control over motor start functions. Do 
not install a jumper on these pins.
Delay Motor Start option
The host system has complete 
control over motor start functions. Do 
not install a jumper on these pins.
Enable Motor Start option
T
E
D
S
M
E
W
P
P
D
R
E
S
T
P
T
P
SCSI I/O
Connector
DC Power
Connector
J2
Drive
Front
J6 J1
J2 Jumper Type
(enlarged to
show detail)
Pin 1
J2
(default)
(default)