?Professional Technical Team Support?:If the purchased operating system is Linux, Mac OS, and WinXP, please contact us to send the driver program. If you encounter any problems using the TODAAIR USB WiFi adapter, please contact us and our technical team will help you resolve it as soon as possible. ?Wide Compatibility?:Supports operating systems Windows 7, 8, 10, 11 (driver free)/Windows XP, Linux, Mac OS 10.9-10.15 (requires driver installation). ?Plug and Play?:This TODAAIR USB WiFi adapter works with Windows 11/10 without a driver. Just plug it into your computer and enjoy high-speed wireless Internet. ?AC650 USB Wi-Fi Adapter?:The USB Wi-Fi Adapter is built with 802.11 ac Wi-Fi technology for faster speed and dual band which reduces interference and ensures no unexpected dropped calls or loss of signal. ?Dual Frequency Without Delay?:The WiFi speed in the 2.4 GHz frequency band can reach up to 200 Mbps, and the Wi Fi speed in the 5 GHz frequency band can reach up to 433 Mbps.