TP-LINK TL-WDN4800 Dual Band Wireless N900 PCI Express Adapter, 2.4 GHz 450 Mbps / 5 GHz 450 Mbps, IEEE 802.1a/b/g/n, WEP / WPA / WPA2, Plug & Play in Windows 8 Wireless Data Rates: Up to 450+450Mbps Frequency Band: 2.4-2.4835GHz 5.180-5.240GHz 5.745-5.825GHz Standards: IEEE 802.11a/b/g/n Security: 64/128 bit WEP, WPA-PSK/WPA2-PSK,802.1x Modulation: DBPSK, DQPSK, CCK, OFDM, 16-QAM, 64-QAM Antenna: 3 x 2dBi Omni Directional, Detachable (RP-SMA) System Requirements: OS: Windows 7(32/64bits), Windows Vista(32/64bits), Windows XP(32/64bits) Features: Wireless Modes: Ad-Hoc / Infrastructure mode Achieves a maximum theoretical throughput of up to 450Mbps Seamlessly compatible with 802.11a/b/g/n products Experience smoother video streaming and online gaming by choosing the clearer 5GHz band for wireless connections Bundled utility provides quick & hassle-free installation.