TP-Link T4E AC1200 Wireless Dual Band PCI Express Adapter (Low-Profile bracket included) High Speed Wi-Fi – Up to 1200 Mbps Wi-Fi speeds (867 Mbps on 5 GHz band and 300 Mpbs on 2.4 GHz band)802.11ac Dual Band – 3 times faster than the 802.11n standard, perfect for high-intensity network usageBeamforming – Wi-Fi signals are strengthened towards certain direction where client exists, 2×2 MIMO – Users can easily access to high-speed wireless connectionMultiple-Size Brackets – Low profile and full heigh brackets are both provided, suitable for all PCsOperating System – Supports Windows (XP/7/8/8.1/10), please upgrade to 17025 insider preview build for Window10** Technical DetailsWireless Standard802.11b, 802.11g, 802.11nBrand NameTP-LinkItem model numberArcher T4EItem dimensions L x W x H12.1 x 11.5 x 2.2 cm