Installing Drives in the External Bays 9-73. Remove the computer cover and front bezel.See “Removing the Computer Cover” and “Removing the Front Bezel” inChapter 7.4. Remove the metal insert from the drive bay that you will be using.5. Slide the new drive into its bay until it snaps securely into place.If necessary, you can adjust drive alignment by repositioning one or both rails.6. Slide the system board tray out to the service position.See “Accessing the Interior of Your System” in Chapter 7 for instructions.7. Connect a DC power cable and one of the connectors on the Ultra/Narrow SCSIcable to the back of the drive (see Figure 9-1).If other installed drives are in the way, temporarily move them out of the way.Press in on the plastic drive rails at the front of the bay to disengage a drive, andthen slide the drive slightly toward the front of the chassis.Refer to “DC Power Cables,” found earlier in this chapter, to determine the cor-rect DC power cable connector to use for the drive. Plug the DC power cableconnector into the four-pin power input connector on the back of the drive.Select the connector on the Ultra/Narrow SCSI cable that most easily reaches thenew SCSI device, and press the cable connector firmly into the drive’s interfaceconnector.If you moved other drives at the beginning of this step, snap them back intoplace.8. Check all cable connections that may have been loosened during this procedure.Arrange cables so that they will not catch on the computer covers or block the air-flow of the fans or cooling vents.9. If a front-panel insert on the front bezel blocks the bay in which you installed thedrive, remove the insert.See “Removing and Replacing Front-Panel Inserts” found earlier in this chapter.10. Close the system board tray.11. Replace the front bezel and computer cover.12. Reconnect the computer and peripherals to electrical outlets, and turn them on.13. Test the SCSI devices.To test a SCSI tape drive, refer to the documentation for the tape drive softwareto perform a tape drive backup and verification test.