I have purchased from Amazon the U500-H Win10 computer for installation in my camper. It will be powered from the camper 12 volt electrical system. On my desk, it works beautifully with the modification that causes it to start when power is applied. Now, i would like a hard answer as to whether it really needs clean conditioned 12 volts or if it will survive on the camper raw 12 volts. I could install a DC-DC converter if its absolutely necessary. I would rather not. Currently the network including three switches, one being PoE+ source all run from the raw 12 with no problem.