Alfa Long-Range Dual-Band AC1200 Wireless USB 3.0 Wi-Fi Adapter w/2x 5dBi External Antennas - 2.4GHz 300Mbps / 5Ghz 867Mbps - 802.11ac & A, B, G, N Amazing Data Transfer Speeds: N 300Mbps, AC 867Mbps Supported Standard's: 802.11a, 802.11b, 802.11g, 802.11N, 802.11ac Wide Range: Includes 2 Dual-Band (2.4GHz / 5GHz) Removable 5dBi Rubber Duck Antennas Supports Windows XP, Vista, 7, 8.1, Mac 10.5, 10.6, 10.7, 10.8, 10.9, 10.10 & Linux Wireless Security: WEP 64-Bit, WEP 128-Bit, WPA-PSK, WPA2-PSK