Product manual

38 Barracuda 9 Product Manual, Rev. C
Figure 11. ST19171WC/DC option select jumper connectors
Jumper Plug
(enlarged to
show detail)
J6 [4]
Drive
Front
Pin 1
Delay Motor Start
Enable Motor Start
Write Protect
Disable SCSI Parity
R
E
S

D
S

M
E

W
P

P
D
R
E
S
R
E
S
R
E
S
ST19171WC/DC
J2
J2
Pin 1
Drive
Front
J6
Pin 1
Pin 2
Reserved
[5]
[5]
[3]
J2 Jumper
(enlarged to 
show detail)
SCSI ID = 0 (default)
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
+5V (anode) [6]
–Active (cathode)
Activity LED
Reserved
The shaded pins are shipped 
with a cover installed. Do not 
install jumpers on these pins. 
Retain the cover unless you 
install a 20-pin plug.
Pin 1