IBM 84885BU Maintenance And Troubleshooting Manual page 63

Adapter guide
11. Carefully grasp the adapter by the top edge or upper corners, and align it with
the expansion-slot guides; then, press the adapter firmly into the expansion
slot. Move the adapter directly from the static-protective package to the
expansion slot.
Attention: Make sure that the adapter is correctly seated in the expansion
slot before you turn on the server. Incomplete installation of an adapter might
damage the system board or the adapter.
Rear adapter-
retaining
bracket
Expansion-slot
cover
Adapter
Front adapter-
retaining bracket
Chapter 4. Customer replacement units
53