HP DX7500 - Manual (Page 26)

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 use a flatblade screwdriver
to pry out the metal shield on the rear panel that covers the expansion slot. Be sure to remove
the appropriate shield for the expansion card you are installing.
Figure 2-10 Removing an Expansion Slot Cover
b. If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it
back and forth until the connectors pull free from the socket. Be sure not to scrape the card
against the other components.
Figure 2-11 Removing a PCI Express x1 Expansion Card
20 Chapter 2 Hardware Upgrades ENWW