Dell Alienware m15 R4 Service Manual page 45

Steps
1. Using the alignment posts, place the right I/O-board in place on the palm-rest assembly.
2. Replace the two screws (M2x3) that secure the right I/O-board to the palm-rest asssembly.
3. Connect the speaker cable to the connector on the right I/O-board.
4. Using the alignment pins, connect the right I/O-board cable on the right I/O-board and the system board.
NOTE: The I/O-board cable is polarity sensitive. To prevent damage to your computer ensure that the MB UMT end of the
cable is connected to the system board.
5. Replace the two screws (M2x3) that secure the right I/O-board cable to the right I/O-board and system board.
6. Adhere the Mylar to the system board.
Next steps
1. Install the M.2 2230 or
2. Install the battery.
3. Install the base cover.
4. Follow the procedure in
2280 solid-state drive, if one was installed in M.2 card slot 2.
After working inside your computer.
45