HP ProLiant SL270s Gen8 SE Server - Manual (Page 41)

Hardware options installation 41
8. Remove the expansion slot cover from the PCI/FlexibleLOM riser cage.
IMPORTANT: If the expansion board ships with an extender bracket, remove it from the
expansion board before inserting the board into the expansion slot of the PCI riser board
assembly.
9. Install the expansion board or FlexibleLOM into the slot until it seats firmly.
o FlexibleLOM
o Expansion board