The UGREEN 20204 AC650 Dual Band USB WiFi Adapter is a compact networking device that provides high-speed wireless internet connectivity to devices lacking built-in WiFi capability. With support for both 2.4GHz and 5GHz frequency bands and a theoretical maximum speed of up to 650 Mbps, this plug-and-play adapter offers flexibility and performance for a variety of devices. Its USB interface ensures compatibility with laptops, desktop computers, and other devices, while its compact design makes it ideal for portability.