NEC Express5800 320La User Manual page 120

8. Holding the PCI board by its top edge or upper corners, firmly press the
board into the PCI expansion slot on the PCI module board. The tapered foot
of the PCI board retaining bracket must fit into the mating slot in the
expansion slot frame. See Figure 4-43.
9. The retaining bracket fits into the space that was occupied by the PCI
expansion slot cover. If you are installing a full-length PCI board you must
also align the rear edge of the PCI board with the adjustable guide rail
located at the top rear of the PCI module, See Figure 4-44.
To adjust the guide rail for a full-length PCI board loosen the setscrew and
slide the bracket until a slot is open in the guard rail that corresponds to the
PCI board position. Then install the board and secure the bracket with the
setscrew.
Figure 4-44. Adjusting the Guard Rail Assembly
4-34 CRU Replacement and Server Upgrades
Figure 4-43. Installing the PCI Board