Shopping for anew power supply . I need one that will work on 130V. All the power supplies I have have a sticker stating 110-230 V input. They do not have a small red switch in the back to select the voltage. I thought I needed that .On Tom's hardware Guide I read there are PSU that switch automatically to the right voltage. How do I know a PSU without voltage switch will work on US power? http://www.tomshardware.com/howto/20021021/powersupplies-06.html "It is also important to consider whether the computer is to be sold internationally. Power supplies are available with both a fixed input voltage of 230 Volts and with a variable input voltage. It is advisable to choose a model with an automatic voltage selection facility. When installing a power supply that uses a switch to select the voltage, prior to switching it on for the first time, it is essential to check the fixed input setting for your country is selected. If you do not check this, the power supply will be instantly destroyed."