Dell OptiPlex 5080 Service Manual page 69

Steps
1. Slide the front I/O-ports on the system board into the front I/O-slots on the chassis and align the screw holes on the
system board with the screw holes on the chassis.
2. Replace the M.2 card standoff (#6-32) screw and eight (#6-32) screws that secure the system board to the chassis.
3. Route and connect all the cables to the connectors on the system board.
Disassembly and reassembly 69