I cannot believe that 30 people looked at this and I got no reply. Well, nevermind, I just took the 12V power supply and ran them parallel to both fans and added the switch. the thing works great. I mounted them onto a vent grate and I am going to mount that onto a plexiglass panel for the side. these things are like leaf blowers. I love it. I had 2 smaller fans blowing in, I am going to turn them so that they blow out. so I will have the 2 big ones blowing in and a total of 3 smaller ones blowing out. plus the case is well ventilated so this is going to work out I think.