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24 Barracuda 50 Installation Guide, Rev. A
Figure 7. Additional jumper options
S
E
D
S
M
E
W
P
P
D
R
E
S
R
E
S
T
P
J2
Pin 1
Pin 2
Enable parity check of SCSI bus (default).
Disable parity check.
Reserved
Parity Check option
Write protect = Off (enables writing – default).
Write protect = On (disables writing).
Write Protect option
Disable the Delay Motor Start option (default).
Motor start delay equal to the SCSI ID multiplied by 12 seconds.
For example, if the SCSI ID = 2, the drive starts in 24 seconds.
Delay Motor Start option
(valid only if the Enable Motor Start jumper is not connected)
Enable motor start. The drive waits for the Start Unit command
from the host before starting the spindle motor.
Disable motor start (default). The drive starts according to the
Delay Motor Start option.
Motor Start option
Force the drive to operate only in single-ended mode.
Use single-ended or low voltage differential mode.
Single-Ended Mode option
J2 Jumper
(enlarged to
show detail)
J2
Drive
Front
J6