Dell OptiPlex 7020 (Mid 2014) - Manual (Page 27)

4. Remove the screws that secure the system board to the computer and slide the system board
towards the front of the computer.
5. Tilt the system board at 45–degrees, and then lift the system board out of the computer.
Installing the System Board
1. Align the system board to the port connectors on the rear of the chassis and place the system board
in the chassis.
2. Tighten the screws securing the system board to the chassis.
3. Connect the cables to the system board.
4. Install the:
a. processor
b. heat-sink assembly
c. expansion card(s)
d. memory
e. cover
5. Follow the procedures in After Working Inside Your Computer.
System Board Layout
The following image displays the system board layout of the computer.
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