Comfast WU720N 150Mbps 802.11n Nano Wireless N WiFi USB Adapter, Compact Miniature Design, Plug in and invisible, Supported on Windows XP/Vista/7/8, Ultra Nano Black Small, Mini design for easy portable use High speed transmission rate up to 150Mbps, with RALINK 5370 chipset Build in 802.11 b/g/n standard, long range network cover for 50-100m indoors and 100-200m outdoors Data encryption 64/128/152 digit WEP,WPA/WPA-PSK,WPA2/WPA2-PSK to ensure you data safety Operationg system,Windows 2000/XP/Vista/WIN 7/LINUX etc