Sabrent USB 2.0 to 10/100 Ethernet LAN Network Adapter [USB to RJ45, LED Indicator, 1 Year Warranty] (NT-WU2R) Full 10/100 Mbps Fast Ethernet performance over USB 2.0's 480 Mbps bus--faster than most wireless connections Windows 8 and Surface Pro built-in support. Windows 7, Vista, XP supported by Windows Update, disk, and download. Powered via USB - no external power adapter needed, automatically saves power when Ethernet cable is unplugged.