Dell OptiPlex 5080 - Page 66

Steps
1. Remove the two (#6-32) screws that secure the front I/O-bracket to the chassis.
2. Slide and remove the front I/O-bracket from the chassis.
3. Disconnect all the cables that are connected to the system board.
4. Remove the M.2 card standoff (#6-32) screw and eight (#6-32) screws that secure the system board to the chassis.
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Disassembly and reassembly