Alfa Long-Range Dual-Band AC1200 Wireless USB 3.0 Wi-Fi Adapter w/2x 5dBi External Antennas &ndash; 2.4GHz 300Mbps/5GHz 867Mbps &ndash; 802.11ac & A, B, G, N Amazing N 300Mbps & AC 867Mbps Data Transfer Speeds are Perfect for Media Wireless Security Standards Include WEP 64-Bit, WEP 128-Bit, WPA-PSK, WPA2-PSK Dual-Band (2.4GHz/5GHz) 5dBi Removable Antennas Guarantee Reliable Access Functions Seamlessly with Windows XP, Vista, 7, 8/8.1; Mac 10.5 or Later; & Linux Supported Standards Include 802.11a, 802.11b, 802.11g, 802.11n, and 802.11ac