Hello, I have a 2021 Yukon with a built-in rear entertainment system in the head rest. Up until this point we have been plugging a phone or a tablet into the system to play on the screens which kind of defeats the purpose of the entertainment system if you’re turning around a tablet in my opinion. I have read in multiple places that you can load media on a USB or external hard drive (both of these will require a USB to HDMI adapter ) and plug into the system and play that way without the use of a tablet or phone. Has anybody figured out how to do this and if so please share instructions?!