Dell Inspiron M421R Owner's Manual page 46

3 Turn the computer over and open the display as far as possible.
4 Lift the connector latches and pull the pull-tabs to disconnect the power-button
board cable, touchpad cable, and hot-key board cable from the connectors
on the system board.
5 Pull the pull-tab to disconnect the display cable from the connector on
the system board.
1
1 display cable connector
3 pull-tab
5 palm rest
7 power-button board cable
45
| Removing the Palm Rest
7
2 hot-key board cable
4 connector latch
6 touchpad cable
5
6
2
3
4