Compaq 159715-002 - Deskpro EN - DT 6650 Model 10000 Configuration Manual page 57

3-18 Upgrading the Compaq Deskpro EN Series, Small Form Factor
5. Return the easy access drive bay to the normal position and
connect the ribbon cable to the rear of the drive.
The ribbon cable is a multifunction cable that carries
power, audio, and data between the system board and the
DVD-ROM drive.
Connecting the Ribbon Cable to the DVD-ROM Drive
6. Remove the bezel blank from the front bezel, if necessary.
7. Replace the computer cover.
8. The system will automatically recognize the drive and
reconfigure the computer.
CAUTION:
When servicing the computer, ensure that cables are
placed in their proper locations during the reassembly process.
Improper cable placement can damage the computer.
CAUTION:
Use only 3/16-inch or 5-mm long screws as guide
screws. Longer screws can damage the internal components of the
drive.