First of all, thank you very much for taking the time to post, I really do appreciate it! :-)
As far as voltage goes, allow me to quote the Apple Developer site on the original Power Mac G4: "The switch has two positions that support voltage ranges of 100 to 130 V or 220 to 270 V".
I entirely agree that voltage is rarely referenced by the exact number that arrives in the line, though. Also, specifications vary from country to country, even when the exact same power is supplied to users.
Maybe we are having two different problems in mind?
The airport code "DUF" is indeed a typo. Thanks for letting me know about it! :-)