A priori, c'est prévu pour réguler 1 ventilo :
"Just plug your CPU fan (or video card, or a case fan, or whatever) into the 3-pin Molex connector on the HardCANO, and you are able to set the fan speed from the front of the case! Leave it on Medium setting to have the fan spin at its rated speed. When you want to keep things quiet, knock it down to low. When things start to get hairy, you can crank it up to high, and let the case fans do their job!"