NEC POWERMATE VE - SERVICE MANUAL 08-1996 Service Manual page 62

3-6 Option Installation
Hold the board by its edges and insert it into the expansion slot (see Figure 3-5).
5.
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.
6. Insert the screw removed earlier to secure the expansion board to the support
bracket.
CAUTION: 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
Figure 3-4 Removing a Slot Cover