Dell XPS 17 (L701X, Late 2010) - Manual (Page 125)

System Board 125
18 Remove the I/O board (see "Removing the I/O Board" on page 111).
19 Disconnect the fan cable and AC-adapter connector cable from their
connectors on the system board.
20 Remove the screw that secures the system board to the top cover.
21 Lift the system board off the top cover.
Replacing the System Board
1 Follow the instructions in "Before You Begin" on page 9.
2 Align the screw hole on the system board with the screw hole on the top
cover.
3 Replace the screw that secures the system board to the top cover.
1 AC-adapter connector cable 2 fan cable
3 system board 4 screw
1
3
4
2