HP Compaq dc5700 MT Hardware Reference Manual page 23

CAUTION
board as long as the system is plugged into an active AC outlet. You must disconnect the
power cord to avoid damage to the internal components of the computer.
5. Remove the computer access panel.
6. Locate the correct vacant expansion socket on the system board and the corresponding expansion
slot on the back of the computer chassis.
7. On the rear of the computer, a sliding slot cover lock secures the expansion card brackets and
expansion slot covers in place. Loosen the captive thumbscrew that holds the slot cover lock in
place (1) and slide the slot cover lock up and off the chassis (2).
Figure 2-8
8. Before installing an expansion card, remove the expansion slot cover or the existing expansion
card.
ENWW
Regardless of the power-on state, voltage is always present on the system
Releasing the Slot Cover Lock
Removing or Installing an Expansion Card 17