Before using the Cynova adapter, I made sure my DJI Osmo Action Camera firmware was up to date. The fit was good and it never felt like it would fall out. I connect the microphone to it BEFORE I connect the adapter to the camera to avoid stressing the USB port. The charging option when using an external microphone adapter is particularly useful for studio work. The adapter is well made, but a bit expensive. The only thing I would like to change is to make the depth a little thinner so it doesn't stick out that far from the camera. Not a big problem when in the small rig cage but looks awkward when outside. I would recommend and buy again.
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