Dell Alienware 17 R5 Service Manual page 76

18 Slide the macro-keys backlight cable (optional) into the connector on the
system board and close the latch to secure the cable.
19 Turn the computer over.
20 Connect the logo-board cable to the system board.
21 Slide the power-button board cable into the connector on the system board
and close the latch to secure the cable.
22 Connect the tobii eye-tracker board cable to the system board.
23 Slide the display cable into the connector on the system board and close the
latch to secure the cable.
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