l To install an external SCSI tape drive, continue with step 5 of this procedure.
6. If you are installing a new SCSI host adapter card, install it in an expansion slot now.
See "Installing an Expansion Card."
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, "Removing an Expansion Card," and "Installing an Expansion Card."
Connect the hard-disk drive access cable to the SCSI host adapter card and to the HDLED connector on the riser board (see "Riser-Board
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 "SCSI Cable and SCSI Termination."
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.
l 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 connector (for a wide SCSI device) on the adapter card, and then press the cable
connector firmly onto the adapter card connector.
l 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.
9. Connect the SCSI device(s) to power.
l If you are installing an internal SCSI device, connect a DC power cable to the power input connector on the SCSI device.
l 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.
10. If you installed an externally accessible device, remove the front bezel and remove a front-panel insert for the drive bay.
See "Removing and Replacing Front-Panel Inserts" for instructions.
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.
l To boot the system from a diskette, insert a bootable diskette (such as an operating system installation or recovery diskette) into
diskette drive A, and turn on the computer.
l To boot the system from a CD, enter the System Setup program and set the Boot Sequence to CD-ROM First. Insert a bootable CD
(such as an operating system installation CD or the Dell ResourceCD) into CD-ROM drive, and turn on the computer.