SNANSHI 3 Ports USB 3.0 Hub + RJ45 Gigabit Ethernet Lan Adapter for PC Notebook/Macbook /Surface Surface Pro/Surface Book 3 Ports of USB3.0 External Hub with a RJ45 Gigabit Ether-net LAN Wired Adapter Can Work at the Same Time Supports USB 3.0/2.0/1.x devices simultaneously The max theoretical transmission speed is up to 5Gbps Plug-and-Play and hot-swap compatible Support system: for Mac OS/Linux/Vista/Windows 7/8 and so on