The Apple TV 2 has 110V/220V PSU or just 110V? I'm going to the USA, and I am planning to buy an Apple TV there for use it in Europe.

Why I should do that?

Because the $99 Apple TV is sold in Europe for €120 ($170). Why pay almost the double for the same stuff?

OK, so the core question: is the internal Apple TV 2 PSU 110V/220V, or just 110V for units sold in the USA?
This US Apple Store webpage says that the current Apple TV (2) has:


  Power: Built-in 6-watt universal power supply


So yes, it looks like it will be fine in Europe.