Dell Precision 5860 Tower Service Manual page 103

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 eleven (#6-32) screws that secure the system board to the chassis.
3. Align and place the supporting bracket on the system board.
4. Install the two (M3) screws to secure the supporting bracket to the system board
Next steps
1. Install the processor.
2. Install the power-supply
NOTE: Install the power-supply cable clips to the power-supply cover replacing the system board.
3. Install the front-fan assembly
4. Install the heat-sink assembly.
5. Install the intrusion switch.
6. Install the powered GPU.
NOTE: Install the graphics-card rubber protector to the chassis after replacing the system board.
7. Install the internal hard-drive
unit.
and rear-fan assembly.
cage.
Removing and installing components 103