Product description:

Designed for GOPRO HERO3 camera output video and charging cable to use, this USB cable has a video output and a 5V external power supply input.  Or use BEC charging (black version GOPRO HERO3 only use original battery to boot, silver version GOPRO HERO3 BEC can not install battery-powered boot).

Specifications: 
GOPRO AV video output cable × 1 
M2 × 4MM cup head screw × 1