In Figures 1 and 2 you can see a three- and a four-pin connector, respectively. Second, all fans are fed with +12 V however, several fans use a red wire on their +12 V line, which is different from the color code used by the power supply, where red means +5 V.Īlso notice that during this tutorial, our examples will use a CPU fan, but everything we say is valid for any kind of fan located inside the PC: video card fan, chipset fan, case fan, etc.

First, the color of the wires may change depending on the fan manufacturer. There are two important things to notice here. Below you have a breakdown of the function of each pin and the most common color for the wire attached to that pin. In this tutorial, we will give you detailed instructions on how to do that, thus reducing the noise produced by your PC.įans can have two, three or four wires.

– to run at three different speed levels (low, medium and high) without spending any money at all? This is possible by just changing the configuration of the wires used by the fan. Did you know that you can modify any fan located inside your PC – CPU fan, VGA fan, north bridge fan, case fan, etc.

Control pc fan speed