HP dc7900 - Convertible Minitower PC Service & Reference Manual page 93

b. If you are removing a standard PCI card, hold the card at each end and carefully rock it back
and forth until the connectors pull free from the socket. Lift the card straight up to remove it.
Be sure not to scrape the card against other components.
Figure 7-17
c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion
socket away from the card and carefully rock the card back and forth until the connectors pull
free from the socket. Lift the card straight up to remove it. Be sure not to scrape the card
against other components.
Figure 7-18
6. Store the removed card in anti-static packaging.
Removing a Standard PCI Expansion Card
Removing a PCI Express x16 Expansion Card
Expansion Cards 81