score:1
If the PSU doesn't say it will work on the lower voltage then it probablly won't.
Normal sockets in the US are 120V. Most US houses will have both 120V and 240V available at the breaker panel in a "split phase" arrangement but normally the only 240V sockets will be specific ones for high power appliances (stoves, clothes driers, etc). If you own the property it would be possible to install a 240V outlet specifically for your PSU but it's almost certainly easier and cheaper to just buy a new PSU.
Upvote:2
I'm not really sure what this has got to do with travel... You will need a new PSU unless your PSU also operates at 110V. Your alternative would be to use it with a high power transformer. I would not recommend it.