Amazon.com: SOONSUN Mini USB to 3.5mm Microphone Adapter Cable for GoPro Hero 4,Hero 3+, Hero3, Hero 4 Black, Silver and White Edition Cameras - Cable Length up to 6.6ft (2 Meters) : Electronics
Gopro Hero 4 3 Usb 3.5mm Mic Adapter Cable | Mini Usb Microphone Gopro Hero 4 - 3.5mm - Aliexpress
Amazon.com : External Stereo Mic Microphone with 3.5mm to Mini USB Micro Adapter Cable for GoPro Hero 3 3+ 4 for AEE Sports Action Camera : Electronics
GoPro 3.5mm Mic Adapter - Audio Test & Review - YouTube
Microphone Adapter Cable for GoPro Hero 3 3 4 Female 3.5mm Audio Converter Lead - Walmart.com
Mini USB to 3.5mm Mic Microphone Adapter Cable Cord for Camera Gopro Hero 3 3+ - AliExpress