What range of resistance to use for a 120mm Panaflo M1A?

[jarsoffart]

What range of resistance should I use to make a 120mm Panaflo M1A approximately 5-12V. Will the 120mm fan start on 5V? Panaflo Fan Specs for reference. I don't know how to do any of these electricity calculations. This fan is going to be powered off the two-pin connector inside the PSU, of which I don't know the voltage.

 

[RalfHutter]

I've got 3 120mm L!As and they all start at 5 volts just fine. Just do the 5 volt wire trick on 'em. That way you don't have to mess with soldering stuff.

Directions for 5V wiring.