TP-Link Wireless N300 PCI Adapter, 2.4GHz 300Mbps -(TL-WN851ND) Standards: IEEE 802.11n, IEEE 802.11g, IEEE 802.11b Interface: 32-bit PCI Antenna: 2x 2dBi Detachable Omni Directional Antenna Wireless Security: Support 64/128 bit WEP, WPA/WPA2/WPA-PSK/WPA2-PSK, Wireless MAC Filtering Wireless Mode: Ad-Hoc; Infrastructure System Requirements - Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits), Windows 2000 Wireless N speed up to 300Mbps makes it ideal for video streaming, online gaming and Internet calls MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability Easily setup a highly secured wireless link with QSS (Quick Security Setup)