Dell Vostro 270 (Late 2012) - Manual (Page 19)

4. Remove the clip and the tabs holding the power switch/LED assembly from the computer.
Installing the Power Switch
1. Push the power switch/LED assembly into the computer till it snaps into place.
2. Connect the power switch and hard drive LED cable to the system board.
3. Replace the cover.
4. Follow the procedures in After Working Inside Your Computer .
Removing the I/O Panel
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover.
3. Disconnect the audio cable and USB cable from the system board.
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