How is the chassis fan powered up? Is the chassis fan connected to the motherboard or power?

With the arrival of summer, room temperature significantly elevated, many friends of the computer began to appear due to poor heat caused by the blue screen crash and so on. For computer users, it is generally possible to clean the dust and the chassis plus the cooling fan to improve the computer's cooling capacity, personal advice to clean up the dust and add a cooling fan two-pronged approach. Now the question is, what about the power supply for the chassis fan? is the chassis fan connected to the motherboard or the power supply? This is a lot of DIY computer users ask more than 2 questions, the following small series on the detailed introduction.

　　Is the chassis fan connected to the motherboard or power?

Many novice friends will encounter this problem when they are installing a fan on a DIY chassis. For chassis cooling fan, generally, the power cord can be connected to the motherboard, can also be connected to the power supply, the key question is what the cooling fan interface, the motherboard is available power interface.

　　Chassis Cooling Fan interface generally has 3 pin interface and 4 pin interface 2, of which 3 pin interface motherboard Fan Power Interface, if the motherboard has this interface location, the fan power cable directly into the motherboard. If the chassis fan has only 4 pin connectors, then only the power supply can be connected .

In addition, for some of the mainstream fan will be equipped with 3 pin and 4 pin interface to meet the compatibility, for this situation, you can choose to connect the motherboard, you can connect the power supply, specific depends on where the location.

Small series suggested that if the fan has 3 pin interface, and the motherboard has an idle 3 pin fan interface, it is recommended that the preferred connection motherboard, so many board fan interface with intelligent speed limit function, according to the internal temperature of the chassis, adjust the voltage, to achieve the intelligent Limit fan speed function.

　　How is the chassis fan powered up?

Overall, the chassis power supply fan installation and connection is relatively simple, for fan installation, the general need to pay attention to the chassis air duct, so that the internal chassis cooling fan to achieve better heat dissipation optimization, as shown in the following figure.

Optimize the knowledge of cooling chassis duct

Chassis fan power supply is introduced here, the chassis fan power wiring is mainly to pay attention to positive and negative, fan interface no matter how many pins can be connected, according to the fan power interface, choose to connect the motherboard or power. In addition, when you encounter a fan with only 3 pin connectors, but the motherboard does not have a fan location, you can purchase a 3PIN 4PIN interface.

Rotary Connector