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Barracuda 9 Installation Guide, Rev. B
Terminating the drive
ST19171N drives are terminated with permanently mounted IC
active terminators. If you install one of these drives and it is not
on the end of the SCSI bus, disable the terminators by removing
the jumper from pins 15 and 16 of connector J2 (see Figure 6). If
you install the drive on the end of the SCSI bus, enable termina-
tion by installing a jumper on pins 15 and 16 of connector J2.
Enable SCSI terminator (default)
Disable SCSI terminator
J2 Jumper Type
(enlarged to
show detail)
Figure 6.
Terminating the drive
J2
T
D
M
E
S
E
J6
Drive
Front
N drives
Pin 1
R
W
P
E
T
T
P
D
S
P
P
J2
SCSI I/O
J1
Connector
DC Power
Connector
33
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