I haven’t seen one but maybe this posts will guide you. This is how the USB host works, take a look at this message https://communities.intel.com/message/219864#219864 . This one is about reading USB host events https://communities.intel.com/thread/45764. And regarding the example maybe you can ask for more info in this post https://communities.intel.com/thread/49873 it’s using a RoboPeak USB display in the USB host. I hope this helps you.