Alienware 15 R3 Service Manual

Procedure

Using the alignment posts on the palm rest, place the touch pad on the palm-rest assembly.
Align the screw holes on the touch-pad bracket with the screw holes on the palm-rest assembly.
Replace the five screws (M2x3) that secure the touch-pad bracket to the palm-rest assembly.
Slide the touch-pad cable and touch-pad buttons cable into their respective connectors on the touch pad and close the latches to secure the cables.
Slide the touch-pad cable into the connector on the system board and close the latch to secure the cable.