For the choice of a USB hub, lightness and portability and rapid and stable transmission must be considered by users. The introduction of USB3.0 HUB solves the problem of insufficient transmission interface. Facing , it expands more scarce USB3.0 interfaces for PCs and computers with USB interfaces. Made of ABS plastic, the design is simple. The surface is frosted, the texture is fine, and the appearance is mini and small, which is suitable for different occasions. It integrates the circuit design of the battery charging controller, and the all-in-one design can easily expand 7 USB3.0 interfaces without external power supply. The layout is reasonable, and the 7 USB devices do not interfere with each other.USB 3.0 has automatic switching rate, providing transfer rate.It can be connected to transfer rates of 125MB/sec. It can also be connected to 2.0 (480/12Mbps) and low-speed (1.5Mbps) USB peripheral . Current protection function:Support overload voltage and instantaneous current protection functions, safe and convenient to use. This product uses a real USB3.0 chip, which can be by professional hardware testing software. Transfer rate 125MB/sec..Support system: Windows 95/98/2000/2003/ME/XP/Vista or OS 8.1/Windows7/8/10Colour:blackMaterial:ABSSize:about 17.2 x 4.3 x 2.1CMPackage Contents:1 x USB 3.0 HUBOnly the above package content, other are not included. Note: Light 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.