Etekcity AR5 150M Wireless WIFI USB 2.0 Network Adapter 802.11g/b/n 6dBi detachable antenna 2.4 GHz frequency, RTL8187L Chipset for Windows 2000/XP/WIN 7/ WIN CE/Vista/Linux/Mac Connects at a full 54Mbps via mini USB2.0 standard (also compatible with USB1.1,up to 8 times faster Frequency band: 2.4-2.4835GHz, RF Power: 20dBm(max), built in USB / Compact and portable Wireless transfer rate: 11n: 150Mbps(max), 11g:6/9/12/18/24/36/48/54Mbps(Self-adaptation),11b:1/2/5.5/11M(Self-adaptation) Chipset: Realtek RTL8187L, External 5 DBI Antenna; Data Modulation Type: BPSK,QPSK, CCK and OFDM, High security 64/128/256bit WEP Encryption, TKIP, Wi-Fi Protected Access (WPA), 802.1 X support Advanced Security Types: WEP 64/128, WPA/WPA2, WPA PSK/WPA2-PSK