HP Pro 3330 Microtower Maintenance & Service Manual page 73

5. Before installing an expansion card, remove the expansion slot cover or the existing expansion
card.
NOTE: Before removing an installed expansion card, disconnect any cables that may be
attached to the expansion card.
a. If you are installing an expansion card in a vacant socket, you must remove the metal slot
cover on the rear panel that covers the expansion slot. Be sure to remove the appropriate
slot cover for the expansion card you are installing.
b. If you are removing a standard PCI card or a PCIe x1 card, hold the card at each end, and
carefully rock it back and forth until the connectors pull free from the socket. Pull the
expansion card straight up from the socket then away from the inside of the chassis to
release it from the chassis frame. Be sure not to scrape the card against the other
components.
Figure 7-15 Removing a PCI expansion card — PCIe x1 card shown
Expansion Cards 63