Supports USB3.1 10 GB 3.2 20 GB full speed Quick , loading and file transfer. Low power consumption, quiet, and durable. Durable material: This product is made of high-quality material, and stable in use. and portable: being so mini and light-weight, this product does not take much space and can be taken . Meticulous workmanship: The meticulous design, perfect in workmanship, durable and long service time. Type: PH74A Colour: Black Material: PCB Package Contents: 1 x Conversion Head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.