IBM 9080-M9S Manual page 493

Figure 424. Removing an adapter from a cassette for the 9080-M9S system
c) Place the adapter, component-side up, on a flat, antistatic surface.
6. After permanently removing a PCIe adapter, you must install a PCIe filler in the cassette.
a) Carefully grasp the filler and align the filler with the slot and its connector in the cassette.
b) Press the filler firmly into the connectors.
PCIe adapters 487