NEC LS2400 Service & Reference Manual page 92

Removing an Option Board
Note: Expansion slot covers must be installed on all
vacant slots to maintain the electromagnetic emissions
characteristics of the system and to assure proper cooling of
the system components.
1. Power off the system and remove the left side panel as described
earlier in this chapter.
2. Disconnect any cables attached to the option board you are
removing.
3. Remove and save the option board retaining bracket screw
4. Hold the board at each end and carefully rock it back and forth until
the edge connectors pull free. Make sure that you do not scrape the
board against other components.
5. Remove the board from the expansion slot and place it in an
antistatic wrapper. If you are replacing a board, go to "Installing an
Option Board" earlier in this chapter, otherwise continue.
6. Install an expansion slot cover over the vacant slot using the
previously removed screw.
7. Replace the left side panel and power on the system.
8. If you removed a non-Plug-and-Play ISA option board, run the SSU
to configure the system as described in the "Configuring Your
System" chapter.
4-20 Upgrading Your System