Hi,
I dont know a lot about the power suplies that you use in the US, but I think that several of my PSU have a marking that says "50/60 Hz... 125~230 Volts"
...so they work anywhere on the world.
Anyone on the US can verify this ?
The connector to the mains outlet itself should not be a problem, you only need to buy one for the US on a hardware store (maybe 1 or 2 US $?) and screwdriver & scissors...
[Hope that helps, and please correct me if I'm wrong.]
Regards.
