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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
You want the hub to be fed a regulated 12v (or 5v, or whatever input it requires). Computer parts aren't meant to handle the voltage fluctuations that are present in a vehicle.