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Connecting monitors to computers via USB isn't really that exciting anymore, but this little USB dreamboat from Century Japan does something much more than that: it runs on bus power. In other words, this thing is powered just like your trusty flash drives, mice and soda can-shaped USB humidifiers. A tiny, portable, fully functional secondary monitor would be extremely useful for mobile power users, and of interest to just about anyone with a spare USB port. Possibly an issue: I'm not sure that "extremely useful" quite translates to "worth $200."
It’s really freakin’ expensive, but my best (and only) guess is that you’re paying for the fact that it’s small and bus powered. I hate power cords so much that I’d just about be willing to pay this ludicrous price and have the option to attach a secondary monitor to my laptop (or even to one of these) without having to worry about an outlet.