Dell OptiPlex GX400 User Manual page 24

Installing the Hard-Drive Bracket in the Chassis
9. Connect the interface cable for the drive (see
NOTICE: To avoid possible damage, you must match the colored strip on the interface cable with pin 1 on both the drive and system board connectors.
a. If you are installing an EIDE device, ensure that the IDE interface cable is properly connected to the EIDE connector on the system board. For
more information, see
b. If you are installing a SCSI device, ensure that the SCSI interface cable is properly connected to the interface connector on the SCSI controller
board. For more information, see
10. Connect a DC power cable to the power input connector on the back of the drive (see the following figure).
Attaching Hard Drive Cables in the Chassis
11. Ensure that all cables are firmly connected. Fold cables out of the way to provide airflow for the fan and cooling vents.
12. Ensure that the control panel cable is firmly connected to the system board.
The control panel contains the hard-drive activity indicator. To locate the control panel system board connector, see
13. Replace the front panel.
14. Replace the computer cover, reconnect the computer and peripherals to their electrical outlets, and turn them on.
NOTE: If enabled, the Chassis Intrusion option will cause the following message to be displayed at the next system start-up:
ALERT! Cover was previously removed.
"Attaching Hard Drive Cables in the
"EIDE Device Installation Guidelines."
"SCSI Device Installation
Chassis").
Guidelines."
"System Board Components."