How to add a USB Wi-Fi connection in Linux
Some USB Wi-Fi adapters will be supported out of the box on Linux, while others may require you to install additional drivers or are not supported at all. Check the details of your specific USB Wi-Fi device for details on how to use on Linux. Once the Wi-Fi device is active and connected to a Wi-Fi network, Speedify will be able to use it.
Here is Speedify running on Raspberry Pi with both Wi-Fi (the lavender bubble) and Ethernet (the blue bubble):
Once it appears, you can adjust the Connection Settings, such as Priority, to control how Speedify uses the adapter.