HP XW3400 - Manual (Page 80)

d . Full Height PCI Express Card with Rigid Hold-down Bracket: If your workstation is
configured with a full height PCI Express x16 card (1) and a rigid, non-hinged hold-down
bracket (2), as shown below, you must first remove screws 3 and 4 and then remove the bracket
before removing the card. Retain the screws for reinstallation of the bracket and proceed to
Step f. to remove the card. After you reinstall or replace the full height PCI Express x16 card,
reverse this process to reinstall the hold-down bracket after inserting the card.
70 Chapter 7 Removal and replacement procedures ENWW