I am having the same issue, haven't been able to figure out how to get one to play DVD and other to play USB.I have video working on USB no issue, but cannot get one screen to show a DVD and the other to show video from the USB. They both either show DVD or USB. I can get to the setup screen that allows you to adjust the sources for each screen, but for whatever reason as soon as a choose DVD or USB for a given display it changes both... any help?