Ê Fasten the expansion card with the screw (see circle).
9.5.1.4 Removing the slot cover (riser module 1)
Figure 94: Removing the slot cover
Ê Remove the screw (see circle).
Ê Remove the slot cover.
V CAUTION!
Keep the slot cover for further use.
Always replace slot covers into unused PCI slot openings to comply 
with applicable EMC regulations and satisfy cooling requirements.