Quote:
Originally Posted by DustyDisks
Back in the day, it was a "p.n.t.a" because you could fry your system using the wrong power supply/adapter. And it is still good to be careful, because there are still older single region units still out there. Only `115-130v 60 cps or 220-230v 50cps. 
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High-power appliances, like hairdriers, are still generally single-voltage. You need to be careful with those if you're travelling, especially if using US appliances elsewhere in the world, since the vast majority of countries use 220-240v.