ATX power supply in 220v mode

[egrange]

If I select 220v input for my desktop computer's power supply what power output is going to the auxiliary socket for my monitor?  The power supply has two North American standard output jacks on it on the the back of the computer.

My monitor is 110v only and I don't want to ruin it.

I can't find any specs on the web to describe whether the output switches or not.

Regards,
Ed

[Geek-9pm]

The switch is internal to the rectifiers.
In 220 mode t is a full wave bridge.
Translation:
Do NOT plug  monitor into  AC receptacle on  the back.
Get either  auto-voltage monitor or get  transformer for you existing monitor.