Compaq Deskpro 4000S and 4000N Personal Computers 5-35
5. If you are installing a new CD-ROM drive, install two guide screws on each side of the drive.
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The guide screws mounted on the right side of the drive are standard-head screws. The guide
screws mounted on the left side of the drive are shoulder-head screws. The drive release latch
will not work properly if the wrong screws are installed.
6. Position the guide screws on the drive into the J-slots in the drive bay and slide the drive towards
the front of the computer. Ensure that the spring-loaded drive release latch properly secures the
drive.
CAUTION: Use only 3/16-inch or 5-mm long screws as guide screws. Longer screws can damage the
internal components of the drive.
7. Install the CD-ROM adapter with the attached flat ribbon cable onto the back of the drive.
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The flat ribbon cable is a multifunction cable that transmits power, audio, and data between the
CD-ROM drive and the system board.
8. If this is a new installation, raise the drive cage to the upright position and connect the flat ribbon
cable to the system board.
Figure 5-26.
Connecting the Flat Ribbon CD-ROM Cable to the System Board