The Orico CBT-UM01 Micro B to USB3.0 Adapter is a multi-function adapter for connecting smartphones, tablets to u-disk, mouse to tablet, keyboard gamepad, etc. It supports OTG function with usb3.0 5Gbps transmission rate. So you get faster transferring HD movies without delay. It has only a 2g weight and is made of an aluminum alloy case with a lanyard design. It has no warranty.