Originally posted by: ricarleite
Look behind your computer. Over here, some of those have a switch in which you can change the voltage. Here in Brazil some locations have 110v, others 220v (locations far away form the power supply), so this kind of thing is common.

Thanks Ric. I'm not at home right now so I'll check when I am, although I have done a lot of dismantling and rebuilding of that computer, and I don't seem to remember any such switch. Would this switch be obvious and easy to find?