Did anyone ever figure this out? I think the OP wanted to upgrade what already is installed so it looks like factory installed but up to standards for this century. A couple other guys here sounded like they wanted to do the same thing. I have researched it a bit. Amazon sells different circuit boards that are USB to 12-24V or just 12-24V to 5V and up to 5A. I bought a few and tested them cause lots of Chinese stuff has made up numbers for the specs. I'm fixing to deconstruct my port assembly to see what I can fit in there to improve it without losing any factory capacity. The only thing that it has though is data transfer, which is slow as ****** anyway. That's another topic though.