Summary: When I first hooked it up, it just didn't work at all. The fan would spin but was stuck at a single speed. It also kinda rattled a bit. After messing around with it bit, I finally got it work. I had to put pressure on the dial just right, and it'd start to control the speed.
Summary: Easy and it works but for one reason or another the fans will not maintain at a set speed which is really annoying but better then the other units I tried which burnt out right away. Have been running for a couple months without issue.
Summary: Well I have two of these in my rig controlling two fans each (a total of 4). These things have worked great for me thus far in a very reliable manner. I believe they run your fan as low as about 5 volts (half speed for most fans) and will ramp up the fans just below their max rpm.
Summary: This fan controller arrived broken. The control nob is messed up in such a way that it only applies the speed you wanted when you apply pressure to the top of the nob and then the fan goes back to full speed as soon as to take the pressure off. Obviously not the way it was designed to function.
Summary: This little device has a nice screwhole on it to easily mount on the inside of a PC case, right in the place of an empty PCI slot. It does exactly what it says it does, you plug 3 pin fan into one side of the wire, you plug the other side into your motherboard, and use the knob to adjust the power...