HP Compaq 6005 Pro MT Hardware Reference Manual page 24

7. Release the slot cover retention latch that secures the PCI slot covers by lifting the green tab on
the latch and rotating the latch to the open position.
Figure 2-10
8. Before installing an expansion card, remove the expansion slot cover or the existing expansion
card.
NOTE:
to the expansion card.
a. If you are installing an expansion card in a vacant socket, remove the appropriate expansion
slot cover on the back of the chassis. Pull the slot cover straight up then away from the inside
of the chassis.
Figure 2-11
18 Chapter 2 Hardware Upgrades
Opening the Expansion Slot Retainer
Before removing an installed expansion card, disconnect any cables that may be attached
Removing an Expansion Slot Cover
ENWW