Dell 720H2C appendix Installing the System Board

2.Remove the computer cover (see Removing the Computer Cover).

3.Disconnect the fan cable from the FAN_CAGE connector on the system board (see System Board Components).

4.Remove any full-length expansion cards (see Removing PCI and PCI Express Cards).

5.Remove the two screws securing the card fan assembly, then remove the assembly and set it aside.

1 screw (2) 2 card fan assembly 3 fan connector

6.Remove any additional components that may restrict access to the system board.

7.Disconnect all cables from the system board.

NOTICE: If you are replacing the system board, visually compare the replacement system board to the existing system board to make sure that you have the correct part.

8.Remove the two screws securing the system board assembly to the chassis, then pull on the two tabs to slide the system board assembly towards the front of the computer.

1 screw (2) 2 tabs

NOTICE: The system board and metal tray are connected and are removed as one piece.

9. Carefully, lift the system board assembly up and out of the computer.

Installing the System Board