The USB-C must be connected to device and the USB-A must be Host. It can't be Reversible from USB-C host to USB-A device. The adapter only transfer the USB 3.0 Data and Power. Support 10Gbps data transfer rating Support external USB device for Tablet Mobile Phone Hard Disk. Can't connect USB-C video/audio and other adapter to USB 3.0 (it cannot work). Type C connector is the new design for USB 3.1 Reversible Design for Type C connector Reversible plug orientation Cable direction.