So, I have two hash boards hooked up. I figured out it doesn't work if you don't have one hash board in the middle. The problem I'm having now is, there is no fan control. Every number I put in the GUI doesn't do anything. I thought I would try and find a manual fan controller, but I've had no luck. Any ideas? I'm thinking the middle hash board that croaked was maybe a special hash board that was able to control the fan?

Thanks for the tip on DeoxIT!