there was a long thread discussing this…..
basically you need a power supply that has isolated outlets and can supply 500mA of power per outlet for the Factors.
it needs to be isolated as if you daisychain the power with other effects you get noise.
I ended up buying a few smaller flat power supplies that I can hide in various places under a shelf on the pedal board, then inside a rack when I went rack.
Buying a few of these was WAY cheaper than buying one of the isolated power supllies that will do this