Basically, I'm trying to wire a new 220v outlet with an additional 110v outlet. Here is the 220v outlet: It's a three-wire outlet but I was told in another thread that I could use 12-3 wire to ...

And so plugging in an appliance designed for 110V into a 220V outlet could damage the appliance or even cause a fire. (The exception is if it's been specifically designed to be "dual voltage", so ...

I have a standard 110v computer and will transport it to Asia where the voltage is 220v. I know I can switch to 220v on the power supply. I just want to make sure this will not damage my components.