Plug and play, easy to use. USB 3.0 A male to micro B male plug. USB 3.0 interface, downward compatible with USB 2.0. High speed transmission, up to 180-300Mbps. Applied to mobile hard disk. Type: USB A to Micro B Adapter Cable Material: Tin-Plated Copper Core + PVC Features: Male to Male, Easy to Use, High Speed Transmission Cable Length: 40cm/15.75", 50cm/19.69" (Approx.)