NEC POWERMATE VE ETC Manual page 41

!
A slot cover can damage the system board or any
option board if it falls into the system. Take care to
keep the slot cover from falling when removing the
screw.
If the slot cover does fall into the unit, remove it
before replacing the cover.
Slot Cover
5. Hold the board by its edges and insert it into the
expansion slot (see the figure on the following page).
Align full-size expansion boards with the guide rail at
the front of the system unit.
Press the board firmly into the expansion slot connector.
Gently rock the board from side-to-side to seat it into the
connector.
Insert the screw removed earlier to secure the expansion
6.
board to the support bracket.
CAUTION
Removing a slot cover
Installing Options 3-11