High-Speed Wi-Fi: 256QAM support ensures that you can fully enjoy fast AC Wi-Fi by increasing the 2.4 GHz data rate from 150 Mbps to 200 Mbps, with 200 Mbps on the 2.4 GHz band and 433 Mbps on the 5 GHz band. Dual Band Wireless: With flexible connectivity offered by the 2.4 GHz and 5 GHz bands, your devices can connect to the newest dual-band Wi-Fi routers for increased speed and range. Antenna with High Gain: The USB adapter's transmission and reception signal strength are significantly increased by a 5dBi high-gain antenna. Compatible with the Most Recent Operating Systems: Completely compatible with Mac OS 10.15 and earlier, Windows 11/10/8.1/8/7/XP