Compaq 247320-003 - Deskpro 4000 - 5166 Model 2500/CDS Reference Manual page 103

3. Slide the expansion board into the expansion slot and press
it firmly into place.
When you install an expansion board, make sure you
press firmly on the board so that the whole connector
seats properly in the expansion board slot.
4. Replace the screw at the side of the expansion slot.
5. Replace the expansion board cage into the computer
chassis.
Be sure the expansion board cage is well-seated in the
chassis and makes a good connection to the system board.
6. Replace the computer cover.
7. Connect external cables to the installed board, if needed.
8. Reconfigure the computer, if necessary. Refer to Chapter 8,
"Using Compaq Utilities," for instructions.
9. If you normally lock the Smart Cover Lock, use Computer
Setup to relock the lock.
10. Test the computer (optional) using the Computer Checkup
(TEST) utility. Refer to Chapter 8, "Using Compaq
Utilities."