SIIG USB 3.0 to Gigabit Ethernet 10/100/1000 Mbps RJ45 LAN adapter for Windows and Mac systems - Black Gen 1 (JU-NE0611-S1) Adds a Gigabit LAN port (RJ45) to your laptop or desktop computer through USB 3.0 connection Compact and light weight design makes it a perfect LAN accessory while on-the-go, provides instant wired Ethernet connection Perfect companion for Apple Macbooks, Microsoft Surface Windows tablets, Ultrabooks and laptops with a defective, slower 10/100 Mbps or lack of an Ethernet port Bus-powered external adapter  easy external installation to replace or upgrade your Ethernet connection, powered directly from the USB bus. Built-in power and data diagnostic LEDs. Supports Wake-on-LAN. Chipset: ASIX AX88179. See promo details below.