No USB charge bricks needed while on shore power...
http://eshop.macsales.com/item/Newer%20Technology/PWR2USB/ Cool idea.... I have a few 12v ports added with dual charger jobbers. But this is cool. You can get 15a and 20a outlets too.
Forum Discussion
There are a few receptacles that allow full use of the 120v outlet AND your USB device.
