Lightning Fast Speed: Upgrade your WiFi card to 1200Mbps Wi-Fi speeds. Make Desktop Get 867Mbps Wireless Speed on 5GHz or 300Mbps on 2.4GHz, Perfect for Online 4K Video, Gaming Online, High Quality Music with this PCI-Express Adapter. IEEE 802.11 AC Dual Band Adapter: Backward compatible with IEEE 802.11a / b / g / n and Dual Band connectivity (2.4GHz or 5GHz) to support all your devices and your best upgradable wireless network adapter for PC. Bluetooth 4.2 technology: Equipped with advanced technology and compatible with 99% Bluetooth capacity devices, Wireless connect mouse, keyboard, earphone, speaker. ect. WIDE COMPATIBILITY: Compatible with Windows10, Windows8.1, Wondows8, Windows7, Windows Server(32/64bits). NOT for Windows Vista System. Works with PCI express X1, X4, X8, X16 slot. Low profile and standard profile bracket inside works with both mini and standard size PCs.