Etekcity USB Wireless Adapter/Wifi Dongle & Network Card w/Dual 6dBi Antenna for Laptop and Computer (802.11 b/g/n, 2.4GHz 300Mbps) Includes TWO 13 dBi antenna and extra 6 dBi antenna, remarkably strengthen signal power of the USB adapter Supports Windows 2000/XP/VISTA/ 7/CE, Linux, Mac Provides 300Mbps transmission rates High security WEP 64/128, WPA/WPA2WPA-PSK/WPA2-PSK Support. Plug-and-Play. Supports Roaming technology. Supports Ad-Hoc and Infrastructure modes.