GoPro Hero 8 Black User Manual page 12

Setting Up Your Camera
5. Unplug the cable and shut the door when charging is complete.
Be sure the door latch is closed and locked before using your camera.
6. Press the door hinge to ensure a tight seal.
WARNING: Your camera's door is removable. Be sure that it is
locked, sealed, and waterproof by checking the door latch
and pressing the hinge after closing the door.
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