GoPro Pro 3.5mm Mic Adapter Click HERE for more information! Enables high-quality audio capture when using a pro-level external mic. Mounting Type: Usd. USB-C power and data extension with 90° connector. Connects a wide range of external 3.5mm mics. Enables stereo mic and line input for external audio sources like an audio recorder or mixer. 106dB stereo analog-to-digital converter.