ALWAYS ALWAYS ALWAYS make sure to flip voltage switches on machines BEFORE packing them to go to another country with different voltage. I recently went on a trip to Peru and forgot to flip the switch on a server we brought down. A stream of smoke and several curse words later, I realized I forgot to flip the voltage switch. Needless to say there were no replacement parts for the machine we were using and had to completely replace the machine. Just be careful!
One nice thing however was that Ubuntu was smart enough to work on the new machine without a reinstall! A simple hard drive swap was all that was necessary!