Dell Inspiron 15 (7548, Late 2014) - Manual (Page 54)

Procedure
1 Disconnect the touch-pad cable, power-light cable, keyboard-backlight
cable, keyboard cable, power-adapter port cable, speaker cable and
battery cable from the system board.
1 touch-pad cable 2 power-light cable
3 keyboard-backlight cable 4 keyboard cable
5 power-adapter port cable 6 speaker cable
7 battery cable
2 Remove the screws that secure the system board to the palm-rest
assembly.
54