Quote Originally Posted by Vampiyer View Post
Why would a PWM controller allow you to "choose between RPM or Voltages" on the LCD readout?

But yes... a lack of visible heatsinks suggests PWM.
Its hard to explain in terms that I can understand because they are very secretive about the PCB design. I will tell you that the way it works is unlike any fan controllers out there, and it is a very low heat design.