All computers generate heat while being used, and it is the fan's and cooling system's job to regulate the temperature inside the computer, keep it in good shape and avoid component damage from overheating.
Fans that are mounted properly don't just maintain the right temperature for the computer system. They generate the right airflow within the computer, which enhances the performance of all computer components, especially for those components that generate heat such as processors and video cards. When purchasing a fan to install in your computer or for better cooling system, you definitely need to know the right way to mount them in your computer case, as it's not as simple as putting them in place and let them do their job.
First thing you need to do is, of course, turn off your computer properly, unplug, and make sure all the cables connected from the front and back panels are disconnected. Remove the screws that hold the side panel n place. Then, slide the side panel out and place it safely aside.
Second, touch the metal part of the computer case to ground yourself and to avoid inadvertent discharge of static electricity that could possibly damage internal components of your computer. Find the fan mount in the computer case where you want to install the fan.
Positive and Negative Pressure
When installing a fan, remember that it is always better to have more air sucked in than blown out. Though this doesn't cool the inside of your computer effectively, by raising the air pressure inside, you can make little air leaks through the cracks between the drivers, panels and vents.
Power Mad
Basic computer fans run on two wires, and these can be either connected directly to the power supply or motherboard. Some modern fans available in the market today have 3 to four wires; the third wire reports the rotational speed of the fan (RPM) back to the motherboard while the fourth one controls the spin, reducing the noise of the computer.
In Goes the Fan
Though it is important which way the fan is facing, its rotational orientation doesn't matter that much, as long as the fan blades spin. However, if you already have an airflow system in your computer, it would be much better if you follow the original position of the replaced fan.
Always screw the fan thoroughly in each of its corners to secure it in place. Also, remember to use the right screws. Then, connect the fan to the motherboard (or power supply, depending on where it's originally connected).
Place your computer's side panel back in place along with wires and power cables. Double check all connections to ensure they are secure before closing the case completely to save having to go back in afterwards. Plug the computer back into a power outlet and you're good to go.
