Features: 1.Unique card opening design, convenient and energy-saving 2.4-port USB interface hot plug-and-play, easy to use 3.The length of connecting wire is 30cm, which is flexible and convenient to use. 4.Overload voltage and instantaneous current protection function to effectively connected equipment and HUB itself 5.The theoretical transmission rate of USB3.0 interface is as high as 5Gbps, and it is downward compatible with USB2.0/USB1.1. Driver-free /7/8 with USB Function: 1.It is equipped with high-performance main control chip and expands 4 USB (1 USB3.0 + 3 USB2.0) high-speed interfaces. 2.It has continuous working and safe and stable transmission performance. With advanced USB PHY technology, each interface can run at a theoretical 5 Gbps transmission rate at full speed under different topology and channel conditions, and the transmission is safe and stable. Product Specifications: Product name: 4-port USB high-speed hub Product interface: one USB3.0+3 USB2.0 Product color: silver Material: aluminum alloy Package Contents: 1 x USB HUB Only the above package content, other are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.