It was XInput only. Logitech and other companies made Xinput controllers that didn't work on Xbox but worked on PC. This is still the case, in fact, as most "PC" controllers are XInput but don't work on Xboxes. Many 3rd party Switch controllers have an XInput mode, usually activated by holding down Home or Sync and the X button on the controller.View attachment 12812
Was it really universal, or was it we support xbox and compatible controllers only no direct input controllers for you...