Comfast WU720N Mini USB WiFi Dongle / Wireless N Network Adapter w/ Internal Antenna for Mac, Laptop / Desktop Computer(802.11 b/g/n, 2.4 GHz 150Mbps) 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.