The Black Tether Tools TetherBoost Pro USB-C Core Controller Extension Cable extends and enhances the Type-C signal an additional 16 feet (5m) to help move your images up to 10Gbits for the fastest and most secure way to transfer your files from your camera to your computer. Connect a base tethering cable, up to 15 feet (4.6m), to get a maximum length of 31 feet (9.4m) of distance while maintaining high transfer rates and connection stability.