Compaq AP500 - Professional - 128 MB RAM Reference Manual page 88

3. Refer to the following illustration to install a PCI or ISA board.
Figure 9-3. Installing an expansion board
IMPORTANT: When you install an expansion board, be sure to press firmly
on the board so that the whole connector seats properly in the expansion
board slot. If you are installing a full length expansion board, be sure to
engage the card guide.
IMPORTANT: To remove a PCI or ISA board, hold the board at each end
and carefully rock it back and forth until the connectors pull free from the slot.
Be sure not to scrape the board against other components. Store the board in
an anti-static package. Remember to reattach the expansion slot cover.
Compaq Professional Workstation AP500 Reference Guide
9-5