TP-Link TL-WDN4800 N900 Dual Band PCI-E Wireless WiFi network Adapter Card for PC Allows desktop computers to connect to high-speed wireless networks, Reaches blazing speeds of up to 450Mbps at 2.4GHz or 5.0GHz. You are recommended to upgrade your router to the latest version of firmware and utility(USB Printer Controller) to support more printers and for better user experience Quick, easy installation with bundled CD utility, three antennas for increased wireless performance and stability and frequency-2.4-2.4835GHz, 5.180-5.240GHZ, 5.745-5.825GHz Supports dual band 2.4GHz and 5GHz channels for smoother HD video streaming, online gaming, and file sharing and wireless modes are Ad-Hoc / infrastructure mode Compatibile with 802.11a/b/g/n products, supports Windows XP 32/64bit, Vista 32/64bit, Windows 7 32/64bit, Windows 8 32/64bit 2-year warranty and unlimited 24/7 technical support