HP ML570 - ProLiant - G2 Setup And Installation Manual page 84

Installing Hardware Options
8. Insert the expansion board (1).
9. Close the expansion slot latch to secure the board into the server (2).
Figure 3-36: Inserting and securing an expansion board
10. Close the PCI retaining clip (for full-length expansion boards only).
Figure 3-37: Securing the PCI retaining clip
HP ProLiant ML570 Generation 2 Server Setup and Installation Guide 3-43