Marek Wasilczu :
O peripheral is molex. How do I connect my case fans?
There are fan headers on the Motherboard that you connect the fans too. If not you can use the Molex/Peripheral connectors.
I have a picture of a fan header on a Motherboard below:
The one above is for a CPU fan, but it shows you the style that you should be looking for. Most of them are probably going to be 3 pin headers, but it all depends on the Mobo that you have.