for those of you who don't mind doing a little 'handywork" and 'electrical engineering", you can check out virtualhideout.com, they hve guide's on how to make fanbus's, switches, and variable dials using rheostats, lets you manually control your whole fan setup, i myself have a 4 port fanbus and a second fanbus connected to 4 individual switches and two rheostats to "control" my two noisiest fans...