Dell OptiPlex GX1 Installation Manual page 19

To install an external SCSI tape drive, continue with step 5 of this procedure.
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6. If you are installing a new SCSI host adapter card, install it in an expansion slot now.
See "Installing an Expansion
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,
Connect the hard-disk drive access cable to the SCSI host adapter card and to the HDLED connector on the riser board (see
Expansion-Card Connectors"). This cable carries a signal from the SCSI host adapter card to the hard-disk drive access indicator on the
computer's front panel whenever one of the SCSI hard-disk drives is accessed.
NOTICE: 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.
7. Attach a SCSI cable to each SCSI device.
For additional instructions on connecting SCSI devices, see
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.
NOTICE: 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.
8. 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
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connector (for a narrow SCSI device) or the 68-pin connector (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
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card.
For additional instructions, see the documentation that came with the adapter card.
9. 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.
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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
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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.
10. If you installed an externally accessible device,
See "Removing and Replacing Front-Panel
11. Replace the computer cover, and reconnect your computer and peripherals to their power sources.
12. Turn on the peripherals connected to the computer.
13. Start the computer system.
NOTE: If the device you just installed is the primary hard-disk drive and no operating system is installed, you must start the
computer using a bootable diskette or CD.
To boot the system from a diskette, insert a bootable diskette (such as an operating system installation or recovery diskette) into
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diskette drive A, and turn on the computer.
To boot the system from a CD, enter the
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(such as an operating system installation CD or the Dell ResourceCD) into CD-ROM drive, and turn on the computer.
NOTE: If Enabled, the
ALERT! Cover was previously removed.
Card."
"Removing an Expansion Card," and
remove the front bezel
Inserts" for instructions.
System Setup program
Chassis Intrusion option will cause the following message to be displayed at the next system start-up:
"Installing an Expansion
"SCSI Cable and SCSI Termination."
and remove a front-panel insert for the drive bay.
and set the Boot Sequence
Card."
"Riser-Board
to CD-ROM First. Insert a bootable CD