I have moved from Singapore (where the power supplies are 220-240V) to the US. I know that the monitor is self adjusting to 120V, and as there is nothing to say otherwise in the manuals I am assuming the scanner (HP),printer(HP)and the main board are the same. Are the power supplies for computers dual voltage or must I purchase a new power supply? When I light up is it going to go boom?

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To define the norm you must sample the excesses