SIIG USB 3.0 Gigabit Ethernet Adapter Pro (JU-NE0511-S1) Instantly adds a Gigabit Ethernet port (RJ45) to your notebook or desktop computer via a SuperSpeed USB 3.0 port Compact and light-weight design makes it an ideal LAN accessory for office or traveling High quality metal housing provides better heat dissipation to allow stable operation and long lifespan Built-in LED indicators enable to monitor network connection at a glance Supports Windows 8 / 7 / Vista / XP and Mac OS X v10.6 or later