I see that the power Supply you linked specifies its input power requirement as 230vac, 5A @ 60 hz. That means that it is designed to be sold and used in a country that supplies 230vac @ 60 hz to your wall socket in your house. 230vac @ 50 hz is used in most countries in Europe as well a several other countries around the world. In what country do you live? The link indicates that the PSU is coming from the UK. Is that where you live?
I would suggest that you find one that specifies its input requirement as 100-250vac @ 50-60hz. Such a power supply is capable of using nearly any input from any country simply by changing the AC power cable to one that matches the socket in your country of residence. No expensive transformer required. In other words if you travel from the UK (230vac @50hz) to the US (115vac @ 60Hz), the only thing you need to plug in your computer to the existing wall power is a low cost socket adapter.