I'd probably use a black blank plate then drill out two holes for some blue
sea products that way they're wired up to 12v all of the time.

Having the USB sockets integrated in a 110v wall plug/plate means the usb
ports need 110v in order to operate (even though he voltage is being
stepped way down) so if your're off the grid and no shore power is
available those wall plug usb ports won't work. not sure you can route a
separate 12v power source to just those usb ports on the wall outlet or
not. highly doubtful since they're made for home applications.

Just thinking out loud here...
Abel.

On Mon, Jul 20, 2015 at 10:41 AM, Roy Nicholl <RNicholl@nbnet.nb.ca> wrote:

> That's the third variation they make ... one receptacle and two USB
> ports.  I've not use that one.
>
> On 20-Jul-2015, at 12:31, T Collins wrote:
>
> > I actually have one of these in my kitchen not the same model numbers,
> but
> > you get the idea:
> >
> http://www.homedepot.com/p/Leviton-Decora-15-Amp-Tamper-Resistant-Combination-Receptacle-and-USB-Charger-White-R02-T5631-00W/205730876
> > .
> >
> > HTH,
> > Tony
>