Compaq Evo D300v Series - Manual (Page 19)

Hardware Upgrades
When you install an expansion card, make sure you press firmly on the card
so that the entire connector seats properly in the expansion card socket.
10. Replace the screw at the top of the expansion slot.
11. Replace the access panel.
12. Connect external cables to the installed card, if needed.
Reconfigure the computer, if necessary.
Removing a 5.25 Inch Drive
1. Shut down the operating system properly, then turn off the
computer and any external devices, then disconnect the power
cord from the power outlet.
2. Remove both access panels.
3. Remove the front bezel.
4. Disconnect the power, data, and audio cables, as necessary, from
the back of the drive.
2-8 Compaq Evo D300 User’s Guide