Dell XPS 12 (9Q33, Mid 2013) - Manual (Page 35)

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4 Disconnect the coin-cell battery cable from the system board.
5 Remove the screws that secure the system board to the palm-rest assembly.
6 Carefully lift the system board and turn it over.
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2
3
1 screws (4) 2 system board
3 coin-cell battery cable
Lift the connector latch and disconnect the keyboard cable from the system board.
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2
1 keyboard cable 2 connector latch
8 Lift the system board off the palm-rest assembly.
Removing the System Board | 35