FJGear switches, like most USB manual switches, are "Plug and Play" (PnP).
If Windows shows a yellow triangle in Device Manager:
Pro Tip: If the switch still fails, unplug the USB cable from your computer, hold the physical "Select" button on the switch for 10 seconds, then reconnect. This performs a hardware reset.
Now that you have the exclusive driver, here is how to level up your workflow.