surface, such as a foam pad, that will sufficiently cushion it.

Configure the device for a SCSI ID number and disable termination, if necessary. For instructions, see the documentation that came with the SCSI device as well as "SCSI Configuration Guidelines" found earlier in this section.

3. Install the SCSI devices as appropriate.

To install a SCSI hard-disk drive, complete steps 3 through 9 of "Installing an EIDE Hard-Disk Drive in the Internal Hard-Disk Drive Cage" found earlier in this chapter. Then continue with step 4 of this procedure.

To install a SCSI tape drive, CD-ROM drive, or DAT drive, complete steps 2 through 6 of "Installing a Drive in a

5.25-Inch Drive Bay" found earlier in this chapter. Then continue with step 4 of this procedure.

To install an external SCSI device, continue with step 4 of this procedure.

If you are installing a SCSI host adapter card, configure the card and install it in an empty expansion slot (see "Installing an Expansion Card".) If you attach any SCSI hard-disk drives to the host adapter card, connect the hard- disk drive access cable to the SCSI host adapter card and to the AUX LED connector on the system board (see Figure 9-1).

4.Attach the SCSI cable to each SCSI device.

For additional instructions on connecting SCSI devices, see "SCSI Cables" 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.

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.

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. Attach the other end of the external SCSI cable to the SCSI connector on the system back panel.

NOTE: Dell offers an external SCSI 68-pin-to-50-pin adapter kit for connecting SCSI-3 devices to the SCSI-2 connector on the Precision 610 system back panel. Contact your Dell sales representative for more information.

5. 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.

6.If you installed an externally accessible device, remove the front bezel and remove the front-panel insert for the drive bay from the front bezel. Then replace the front bezel.

For instructions, see "Removing and Replacing the Front Bezel" and "Removing and Replacing Front-Panel Inserts".

7.Replace the computer cover. Then reconnect your computer and peripherals to their power sources, and turn them on.

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

8.To reset the chassis intrusion detector, enter the System Setup program and reset Chassis Intrusion to Not Detected. See "Using the System Setup Program" for instructions.

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

9. If necessary, update the drive system configuration information in the System Setup program.