What voltage is this?

You are installing a new computer at a remote office in another country. What’s the best way to determine the voltage of the wall outlet power source and how can you configure the computer for best results?

What tool can diagnose power connections?

One of the computers in your lab is having problems with power, and you suspect that the issue is related to the voltage provided at the power outlet. What tool can help you diagnose the exact voltage at the outlet and inside the computer?