I appreciate all your comments, the truth is that it remains unclear, but now it is not as simple as I thought.
From an IT point of view it should not be a problem as long as you have connected in series the 2 Psu-s. Connecting in series mean to unite both psus with the green cable.
Here is a video of how to do it, anyway don't try this without the help of an IT professional.
https://www.youtube.com/watch?v=PPUQjWDSddE