IBM 6644 - Manual (Page 51)

38 User Guide
Installing an adapter
Your computer system board has two low-profile peripheral component
interconnect (PCI) expansion slots. Depending on your model, the expansion slots
might already have adapters installed. You can install a low-profile PCI adapter
in any available PCI expansion slot. These adapters must not exceed 16.9 cm (6.66
inches) in length and 5.15 cm (2.04 inches) in height. Also, low-profile PCI
adapters use low-profile mounting brackets.
To install an adapter, do the following:
1. Remove the computer cover. See “Removing the computer cover” on page 36.
2. Remove the screw and slot cover for the expansion slot.
3. Install the adapter into the expansion slot on the system board, and then
install the screw that secures the adapter.
4. Replace the computer cover.