Connecting 3 pin cpu fan to 4 pin cobbector on motherboard

Vakas · 23 Sep 2010 at 18:43

Hi

The fan controler for my CPU fan became faulty so had to take it off and replace it and can remeber how it was connected.

I have a 4 pin connector on the motherboard and the fan controller from the CPU fan is a 3 pin, so I want tro know is which end pin do I miss out to connect it?

Do I miss 1 pin from the left and plug it in the remaing 3 or the other arount?

Thanks

ThomasTheTankEngine · 23 Sep 2010 at 19:37

They're normally idiot proof..... the little piece of plastic that comes up should stop you putting it over the wrong pins.

Doughnut007 · 23 Sep 2010 at 19:57

they only fit in one way there should be a guide to help you (little plastic strip)

PhillyDee · 23 Sep 2010 at 20:04

Its called a key

They are keyed like this:

:::.

You cannot get it wrong as long as it is not forced on.

1Day · 23 Sep 2010 at 20:52

Leave the blue wire unconnected that will allow the fan to run full speed.

Vakas · 23 Sep 2010 at 22:23

Thanks guys for all your help hoing to connect it up later on or tomorrow

Serpantine · 23 Sep 2010 at 22:32

On a similar note, i have a 4 pin connector on my fan controller which i want to put a 3 pin fan onto, will the same principle work?

1Day · 24 Sep 2010 at 09:53

Sure will - on the four pin male you will find that there is only one way you can connect the female connector.