Dell Alienware 17 R2 (Early 2015) - Manual (Page 49)

2 Note the touch-pad cable and status-light cable routing and peel off the
cables from the keyboard bracket.
1 latches (2) 2 touch-pad cable
3 status-light cable
3 Remove the screws that secure the keyboard bracket to the palm-rest
assembly.
4 Slide the keyboard cable, keyboard-backlight cable, macro-keys cable and
macro-keys backlight cable through the slot on the keyboard bracket.
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