AC600 High Gain Wireless Dual Band USB Adapter Archer T2U Plus High-Speed Wi-Fi : 256QAM support increases the 2.4 GHz data rate from 150 Mbps to 200 Mbps, 200 Mbps on the 2.4 GHz band and 433 Mbps on the 5 GHz band, ensure you fully enjoy fast AC Wi-Fi. Dual Band Wireless : 2.4 GHz and 5 GHz band provide flexible connectivity, giving your devices access to the latest dual-band Wi-Fi router for faster speed and extended range High-Gain Antenna : A 5dBi high-gain antenna greatly enhances the reception and transmission signal strength of the USB adapter Supports the Latest Operating Systems : Fully compatible with Windows 10/8.1/8/7/XP and Mac OS X † Maximum wireless signal rates are the physical rates derived from IEEE Standard 802.11 specifications. Range, coverage, and the maximum number of connected devices are based on test results under normal usage conditions. Actual wireless data throughput, wireless coverage, and number of connected devices are not guaranteed and will vary as a result of 1) environmental factors, including building materials, physical objects, and obstacles, 2) network conditions, including local interference, volume and density of traffic, product location, network complexity, and network overhead, and 3) AP limitations, including rated performance, location, connection quality, and AP condition.