TP-Link TL-WN851N Wireless N Adapter IEEE 802.11b/g/n 32-bit PCI Up to 300Mbps Wireless Data Rates Wireless Data Rates: Up to 300Mbps Frequency Band: 2.4 GHz - 2.4835 GHz Standards: IEEE 802.11b/g/n Security: Support 64/128 bit WEP, WPA/WPA2, WPA-PSK/WPA2-PSK Antenna: 2x2dBi Omni Directional, Detachable Antenna (RP-SMA) System Requirements: OS: Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits), Windows 2000 Features: Wireless N speed up to 300Mbps makes it ideal for video streaming, online gaming and Internet calls 2T2R MIMO delivers greater throughput at range versus conventional 1T1R Easily setup a highly secured wireless link at a push of QSS button Supports ad-hoc and infrastructure mode Bundled utility provides quick & hassle free installation Seamlessly compatible with 802.11n/b/g products. Dimensions: 5.2 x 4.8 x 0.9