How do you go about connecting 4 pin molex fans?

Solution
Normally, you connect the case fans to the fan headers on the motherboard. Then the bios controls the fan speeds to keep the components at the correct temperature range. Note that you don't have to connect/use all 5 fans. It depends on your components and if you're overclocking. You may only need 2 or 3 fans. If you buy a mobo with 2 case fans header, you'll connect one fan to the first header and 2 fans to the second header using a fan splitter cable.
Normally, you connect the case fans to the fan headers on the motherboard. Then the bios controls the fan speeds to keep the components at the correct temperature range. Note that you don't have to connect/use all 5 fans. It depends on your components and if you're overclocking. You may only need 2 or 3 fans. If you buy a mobo with 2 case fans header, you'll connect one fan to the first header and 2 fans to the second header using a fan splitter cable.
 
Solution