i have mine with rebug on it so that i can play my pal ps2 games without any issues since the european 60 gb is half software half hard ware vs 20 gb full hardware.
thank you for answering Mark Kaine i looked up my model number it is cechb00 a japanase 20 gb ps3 launch system and it is using a multivoltage power supply which can handle from 100v to 240v.