Dell OptiPlex Gxi - Manual (Page 91)

Installing Drives 7-13
• To install an external SCSI tape drive, continue
with step 5 of this procedure.
5. If you are installing a SCSI host adapter card,
install it in an expansion slot now.
See “Installing an Expansion Card” in Chapter 6.
If a SCSI host adapter card is already installed,
remove, reconfigure, and reinstall the card at this
time. See the documentation that came with the
SCSI host adapter card as well as “Removing an
Expansion Card” and “Installing an Expansion
Card” in Chapter 6.
Connect the hard-disk drive access cable to the
SCSI host adapter card and to the HDLED connec-
tor on the riser board (see Figure 6-3). This cable
carries a signal from the SCSI host adapter card to
the hard-disk drive access indicator on the com-
puter’s front panel whenever one of the SCSI
hard-disk drives is accessed.
6. Attach the SCSI cable to each SCSI device.
For additional instructions on connecting SCSI
devices, see “SCSI Cable and SCSI Termination”
found earlier in this section.
If you are installing an internal SCSI device, firmly
press the SCSI cable’s header connector onto the 50-
or 68-pin connector on the back of the device.
The connectors on narrow SCSI cables are keyed for
proper positioning—a raised area on the outside of
the header connector fits into a notch on the device
connector. The connectors on wide SCSI cables are
shaped so that they can be attached one way only.
If you are installing an external SCSI device, connect
one end of the external SCSI cable to the SCSI bus
connector on the back of the device.
7. Attach the SCSI cable to the connector on the
SCSI host adapter card.
• If you are installing an internal SCSI device,
connect the colored edge on the internal SCSI
cable to the pin-1 end of the 50-pin connector
(for a narrow SCSI device) or the 68-pin con-
nector (for a wide SCSI device) on the adapter
card, and then press the cable connector firmly
onto the adapter card connector.
• If you are installing an external SCSI device,
connect the other end of the external SCSI cable
to the external connector on the adapter card.
For additional instructions, see the documentation
that came with the adapter card.
8. Connect the SCSI device(s) to power.
• If you are installing an internal SCSI device,
connect a DC power cable to the power input
connector on the SCSI device.
• If you are installing an external SCSI device,
connect the socket-end of the power cable into
the AC power receptacle on the back of the
SCSI device. Connect the other end of the
power cable into a standard electrical wall
outlet.
Check all other cable connections. Fold all internal
cables out of the way to provide airflow for the fan
or cooling vents.
9. If you installed an externally accessible device,
remove the front-panel insert for that bay from
the front bezel. Then replace the front bezel.
10. Replace the computer cover. Then reconnect your
computer and peripherals to their power sources,
and turn them on.
11. If necessary, enter the System Setup program to
update the system configuration information.
If you installed a SCSI hard-disk drive, set the Drive
0 and Drive 1 System Setup categories under Drives:
Primary to None. For instructions, see Chapter 2,
“Using the System Setup Program.”
Tape drives attached to a SCSI host adapter card are
not part of the system configuration information.
CAUTION: You must match the colored strip
on the cable with pin 1 on the drive’s interface
connector to avoid possible damage to your
system.
CAUTION: You must match the colored
strip on the internal SCSI cable with pin 1
on the adapter card connector to avoid
possible damage to your system.