It seems more and more gadgets, although they may have a wall wart, are ultimately USB-chargeable.  Replace a normal AC wall socket with the USB Outlet Quattro from CurrentWerks, and you’ll be able to charge up to four USB devices at once without using those wall warts.  With the Quattro, you have four standard USB [...]

Source: http://the-gadgeteer.com/2012/03/07/usb-outlet-quattro-from-currentwerks/

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more places for info:

Midday Glance: Computer companies – CBS News – CBS News.com
Mac / PC News: In a World of Technology! – YouTube
AOL.com Video – Computer Testing to Avoid Repeat Concussions