I'm doing some research and it looks like most modern computer power supplies support 100-240 VAC and 50-60Hz, which means they can be used in either US or Europe as long as you have a power cord that fits the local outlets. Does that sound right?
@annika yeah, the little red switch at the back controls it. (interestingly, most laptop PSUs seem to automatically switch instead of requiring it manually if they're ~100-240V)
