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 usage
• Beamforming – Wi-Fi signals are strengthened towards certain direction where client exists, 2×2 MIMO – Users can easily access to high-speed wireless connection
• Multiple-Size Brackets – Low profile and full heigh brackets are both provided, suitable for all PCs
• Operating System – Supports Windows (XP/7/8/8.1/10), please upgrade to 17025 insider preview build for Window10**