Dell Inspiron 15R Owner's Manual page 29

Turn the computer over.
2
Lift the connector latches and pull the pull-tabs to disconnect the power-button
3
board cable, touchpad cable, and hot-key board cable from the connectors on the
system board.
1 power-button board cable
3 connector latch
5 hot-key board cable
28
| Palm Rest
1 2
3 4
2 pull-tab
4 touchpad cable
5