Hello Francesco Mauro,
You should be able to use the 20X USB model with that switcher through the HDMI output.
Control with Blackmagic products is not something we have gotten to work reliably. We have heard from some customers who have gotten control working with serial converters. There is forum post here, where someone describes what they had to do to get control working through a Blackmagic interface.
If you connect your camera to your network you would be able to control the camera with our free Camera Control App. Or you could use our IP joystick, the PT JOY G3.
Francesco Mauro
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