​Features:100% brand new and in high quality. It is appliable to desktop, notebook, laptop, ultrabook and so on.The max theoretical transmission speed is up to 5Gbps.3 super speed USB3.0 ports allows you to connect a variety of USB devices with your computer which makes your work more efficient.3 ports of USB3.0 external hub with a RJ45 gigabit ether-net LAN wired adapter can work at the same time. It is really practical , high-performance, safe and stable!The pure black design can make you match it with different colors casually and conforms to the atmosphere of business office.Perfectly support for Mac OS/Linux/Vista/forwindows 7/8 and other higher systems.Specifications:Color: blackSize: about 11×3.2×2cmTransmission speed: 10/100  MbpsInput port: USB3.0 ×1Output port: USB3.0 ×3Cable length: 17.5cmSupport system:for Mac OS/Linux/Vista/forwindows 7/8 and so onPackage include：1 × 3 Port USB3.0 Hub With 1 RJ45 Gigabit Ethernet LAN Wired AdapterNo Retail Box,Packing Safely in Bubble Bag.