@joe-berndt yes i have the pro switch controller ,it work on recalbox
instructions:
1: go to the recalbox associate bluettoth controller

2: make a long press on the verry small button at left of usb (you listen a click)0_1584697079938_IMG_9326.JPG

3:press on associate a bluetooth controller at the same time as you press the small button (make a very long press on the small button)wait, your recalbox will have found bluettoth devices including one called pro controller press on it
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4:your swith pro controller is detected go to configure controller and your controller is detected
ollow the instructions to configure a controller and your controller will therefore be operational (at each start of the recalbox (the recalbox must find the controller) you have to do a long press on the small button and go to configure a controller and it will appear