Supports 802.11ac standard- The next generation of Wi-Fi Backward compatible with 802.11 a/b/g/n products Ultra-fast AC1300 (866+400Mbps) wireless speed with 802.11ac Maximum speed up to 5GHz 866Mbps or 2.4GHz 400Mbps Dual Band connections for lag-free HD video streaming and gaming Supports Win10/8.1/8/7/xp/vista;32/64bits; MAC OS; Linux This Dual Band Adapter delivers powerful wireless technology to your desktop or notebook computer Simply plug the adapter into an available USB port and connect to a wireless network to access a secure high-speed internet connection 2.4GHz (400Mbps) or 5GHz (up to 866Mbps). And with integrated Dual Band technology Chipset:Reatek 8812BU USB:3.0 USB Wireless Speed: 802.11ac: up to 866Mbps 802.11n: up to 400Mbps 802.11g: 6/9/12/18/24/36/48/54Mbps 802.11b: 1/2/5.5/11Mbps Antenna Type:2 x 2dBi Internal antennas (2T2R)"