TUDIA WAD511N 300Mbps Wifi Wireless-N USB Micro Mini Adapter WPS One-Button Setup - Windows XP, Vista, 7, 8; Mac OS X 10.5 Greater; 2.4G 802.11ngb 32-Bit and 64-Bit CompatibleDoes Not Support Win8.1 Black Up to 300Mbps wireless data rates ideal for video streaming, online gaming, and internet calling. Plug and Play USB2.0 interface (this adapter does not provide internet service without an existing service plan) Mini-sized design for convenient portability with a reliable high performance Easy one-touch wireless security encryption with the WPS button. Operates in 2.4 GHz frequency bands Wireless Standards: IEEE 802.11b, IEEE 802.11g, IEEE 802.11n Compatible with Windows 7, 8, vista, XP; MAC OS X 10.5 Greater (*Does Not Support Win8.1*)