The may require a bit of hunting, but with the right approach, it remains a functional piece of legacy hardware. By understanding the underlying Ralink RT3070 chipset and following the installation steps above—especially for Windows 10 and 11—you can bring this small but capable USB dongle back to life.
If you see a yellow exclamation mark, your operating system recognizes the hardware but does not understand how to talk to it. Driver Wlan Usb 2.0 Ct-wn4320z