https://www.pcgamer.com/best-usb-wi-fi-adapter/

A USB Wi-Fi adapter is a useful device that can help improve your Wi-Fi connection. These days all laptops, and many desktops, have a wireless adapter integrated via a mini PCIe card, but the wireless adapters that most computers ship with are generally behind the current curve, often by a generation or more. This is where a USB Wi-Fi adapter is useful: to upgrade the wireless networking capability of the laptop with a simple plug-and-play solution.

For this guide, we've collected the latest hardware from several manufacturers and run them through their paces. We test performance using NetPerf software at three distances on both the 2.4 GHz and 5 GHz frequency. Based on those results, these are the best USB Wi-Fi adapters.