Dell Alienware 15 (Early 2015) - Manual (Page 40)

9 Gently lift the palm-rest assembly and remove the keyboard cable,
keyboard-backlight cable, macro-keys cable, and macro-keys backlight
cable from the slot on the computer base.
1 palm-rest assembly 2 plastic scribe
10 Carefully turn the palm-rest assembly over and disconnect the power-
button board cable from the system board.
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