Dell XPS 14 (L401X, Late 2010) - Manual (Page 103)

System Board 103
15 Remove the AC-adapter connector (see "Removing the AC-Adapter
Connector" on page 97).
16 Disconnect the Bluetooth-card cable, logo-light cable, and daughter-board
cable from their connectors on the system board.
17 Remove the two screws that secure the system board to the top cover.
1 power-button board cable connector 2 touch-pad status light cable
connector
3 coin-cell battery cable
1
2
4
3
5