Lenovo IdeaCentre AIO 3 22ADA05 F0EX User Manual page 46

8. Rotate the screw for 90 degrees anticlockwise as shown, then close the screw cover.
9. Place the computer in an upright position.
10. Reconnect the ac power adapter and all disconnected cables to the computer.
Note: If a locking device is available, use it to lock the computer.
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User Guide