Dell D31M Owner's Manual page 125

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 (6-32) M.2 standoff screw to secure the system board to the chassis.
3. Replace the eight (6-32) screws that secure the system board to the chassis.
4. Route the cables through the routing guides on the chassis and connect the power and HDD cables to their respective
connectors on the system board.
5. Lift the pull tab to close the PCIe door.
6. Align the front I/O-bracket with the slots on the chassis.
7. Replace the two (#6-32) screws that secure the front I/O-bracket to the chassis.
Next steps
1. Install the processor.
2. Install the System fan.
3. Install the processor fan and 125 W heat-sink assembly
4. Install the 3.5-inch hard
5. Install the VR heatsink.
6. Install the powered GPU.
NOTE: This step is required only if the system is configured with powered GPU.
7. Install the graphics card.
8. Install the M.2 2230 SSD/M.2 2280
9. Install the WLAN.
10. Install the memory module.
11. Install the front bezel.
12. Install the side cover.
13. Follow the procedure in
NOTE: Your computer's Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup
program. You must make the appropriate changes again after you replace the system board.
drive.
SSD.
after working inside your
or .
computer.
Removing and installing Field Replaceable Units (FRUs) 125