1,[Fast data transfer]1 port usb 3.0 hub, Larger data transfer becomes easier, 3 port usb 2.0 hub, Can be a good solution to the number of USB interface problem2,[Plug and Play] no driver and software required, quick identification of the device, USB 3.0 Super Speed data transfer up to 5Gbps3,[Aluminum alloy shell protection]The built-in smart chip avoids short circuits. Aluminum shell, with good metal texture.4,[Wide range of USES]Hub Extensions meet the multi-port expansion requirements of the device.Charging, USB flash drive, mouse, keyboard.5,Ultra-thin and light mini USB3.0 hub, backward compatible with USB2.0, 1.1 or 1.0. Maximum compatibility and performance.Product name: 4 ports HUBCable length: 0.5mColor: dark grayMaterial: aluminum alloy4 HUB ports: USB3.0*1+USB2.0*3Package Contents:1 x 4 port USB hubOnly 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.