3. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your docking device for instructions.
4. Disconnect all telephone or network cables from the computer.
5. Press and eject any installed cards from the ExpressCard slot and the 8-in--1 memory card reader.
6. Disconnect your computer and all attached devices from their electrical outlets.
7. Turn the computer over.
8. Slide and click the battery latch release.
9. Slide the battery out of the battery bay.
10. Press the power button to ground the system board.
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