Hello, yes, but I'm not sure if it is supported in games. By the way, you can also connect the Joycons via Bluetooth :)

The adapter basically works well, I needed it for multidevice. I cannot test the connection with the Nintendo Switch Pro (due to lack of hardware). But beware: since the Creators Update, Bluetooth on my desktop (W10 Pro) often has problems, e.g. the mouse is suddenly no longer recognised. A restart solves the problem, but is somewhat annoying if it occurs repeatedly. I have therefore (temporarily) returned to the normal logitech Unifying receiver (in combination with the DeLock USB3.0 Switchbox).