HP Compaq d330 DT Hardware Reference Manual page 22

Hardware Upgrades
2–12
2. Turn off the computer properly through the operating system and
turn off any external devices. Disconnect the power cord from the
power outlet and disconnect any external devices.
3. Remove the computer cover and locate the correct vacant
expansion socket on the system board and the corresponding
expansion slot on the back of the computer chassis.
4. Release the slot cover retention bracket by lifting up on the two
thumb tabs 1 then rotating the bracket away from the chassis 2.
Releasing the Slot Cover Retention Bracket
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