Dell OptiPlex 390 (Mid 2011) - Manual (Page 31)

Coin-Cell Battery
11
Removing the Coin-Cell Battery
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the front bezel .
4. Press the coin-cell battery inward to allow the battery to pop up from the
socket.
5. Lift the coin-cell battery out of the computer and properly dispose of the
battery.
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