Dell OptiPlex Gs Reference and Installation Guide (.pdf) - Page 92
See Installing an Expansion Card in devices, see SCSI Cable and SCSI Termination
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3. If you are installing a SCSI host adapter card, configure the adapter card. For instructions on configuring the card, see the documentation that came with the adapter card as well as "SCSI Configuration Guidelines" found earlier in this section. 4. Install the SCSI devices as appropriate. • To install a SCSI hard-disk drive, complete steps 3 through 7 of "Installing an EIDE Hard-Disk Drive" found earlier in this chapter. Then continue with step 5 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 the 5.25-Inch Drive Bay" found earlier in this chapter. Then continue with step 5 of this procedure. • To install an external SCSI tape drive, continue with step 5 of this procedure. 5. If you are installing a new 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 connector 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 computer's front panel whenever one of the SCSI harddisk 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-pin connector on the back of the device. The connectors are keyed for proper positioning-a raised area on the outside of the header connector fits into a notch in the shroud surrounding the 50-pin connector on 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. 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 on the host adapter card, and then press the cable connector firmly onto the adapter card connector. 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. • If you are installing an external SCSI device, connect the other end of the external SCSI cable to the external connector on the host adapter card. For additional instructions, see the documentation that came with the host 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 alternating current (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. 7-12 Dell OptiPlex Gs and Gs+ Low-Profile Systems Reference and Installation Guide