What's the USB plug used for on the gopro when attached to the gimbal? Anyone know? Does it charge the battery? Allow you to pick snapshot or video mode? The Zenmuse H3-3D manual doesn't really say speak to the functionality of the plug just how to connect it. I use the little scroll wheel on the upper left side of the RC to tilt the gimbal but that's about it? What functionality does connecting the gimbal cable allow me?
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