HP EliteDesk 800 G1 Tower Service Manual page 66

4.
Press straight down on the two green thumb tabs on the exterior of the chassis (1) and rotate the
expansion card retention latch open (2).
5.
Before installing an expansion card, remove the expansion slot cover or the existing expansion
card.
NOTE:
attached 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. Lift the expansion slot cover from the expansion slot.
54 Chapter 5 Removal and replacement procedures: Tower (TWR)
Before removing an installed expansion card, disconnect any cables that may be