4.Remove the memory module by grasping it by the corners and pulling it up out of its connectors.
5.Remove the memory retention bracket by pulling it up out of its guides.
6.If you are migrating components (such as expansion cards, SEC cartridge/ heat sink assemblies, and/or guide bracket assemblies) to a replacement system board, remove those components now.
Note the slot numbers of any PCI cards you are migrating to the new system board so that you can install them in the same slots on the new board.
7.Loosen the thumbscrew securing the system board to the bottom of the chassis.
8.Slide the system board toward the front of the chassis about a half an inch to clear the chassis hooks, and remove the board.
If you are replacing the system board, install any components you removed from the old system board onto the replacement board. To retain the same system configuration and appropriate resource sharing, install PCI expansion cards in the same slots they were in on the old system board. Verify that the jumper settings on the new system board are correct.
