I have a Saitec USB quadrant together with Saitec rudder pedals and a Thrustmaster Hotas Warthog Stick. Will the USB quadrant function in MSFS 2020.
Yes, no problem.
Why so shy, try it by yourself! It will harm no animals .
Any USB controller will work (just like in any other game). Some non popular ones might not have default mappings, but the Saitek / Logitech throttle quadrant obviously does. Any Windows compliant USB controller is seen by the system (and the game) as just a bunch of axis and buttons.