all mobo's wark at the same voltages (bundle of wires form your powersupply) It would be more expensive to make area-sensitive equipment rather than powersupplies with a switch. If 230V comes out of the wall, and you set the switch at 110V, your 12V will be 24V, your 5V will be 10V and so on --> everything will melt (ie leave the switch at 230V) ((if 110V comes out of the wall, and the Powersupply is at 230V, vo harm is done, your systemvoltage will be too low to boot the system, but nothing will melt))
your'e welcome 🙂