Dell OptiPlex 7020 - Removing the System Board

Installing the Intrusion Switch
1. Insert the intrusion-switch into the chassis rear and slide it outward to secure it.
2. Connect the intrusion-switch cable to the system board.
3. Install the:
a. heat sink assembly
b. cover
4. Follow the procedures in After Working Inside Your Computer.
Removing the System Board
1. Follow the procedures in Before Working Inside Your Computer.
2. Remove the:
a. cover
b. front bezel
c. optical drive
d. drive cage
e. memory
f. expansion card(s)
g. heatsink assembly
h. power supply
i. processor
3. Disconnect all the cables from the system board.
4. Turn the hex screw counter clockwise and remove from the system board.
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