What does cha fan mean?

"cha fan" means the chassis fan; "cha" is the abbreviation of "chassis", which means chassis. The "cha fan" interface is the fan power supply interface on the motherboard, used to connect the motherboard and the chassis The fan can intelligently adjust the speed and control noise based on the information fed back by the temperature sensor.

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

cha fan means chassis fan

cha_fan is the socket for the chassis fan, cha is the abbreviation of chassis, which means chassis.

There are generally two types of chassis cooling fan interfaces: 3 PIN interface and 4 PIN interface. The 3 PIN interface is the fan power supply interface on the motherboard. If the motherboard has this interface location, just plug the fan power cord directly into the motherboard. . And if the chassis fan only has 4 PIN interfaces, it can only be connected to the power supply for power supply.

CHA_FAN interface knowledge:

CHA_FAN is the chassis fan, and RAD is the radiator fan. On this motherboard, there is not much difference between the two. They are basically the same in terms of appearance and power supply characteristics. The appearance is also easy to recognize. There is a small clip next to the Pin interface, which is very easy to recognize. It can adjust the speed intelligently and control noise in conjunction with the information fed back by the temperature sensor.

Extended knowledge

• ##CPU_FAN interface knowledge

CPU_FAN is a special interface for CPU radiator, 12V working voltage, 4PIN (pin), the 4-pin fan has a PWM intelligent speed adjustment function, which intelligently controls the fan according to the load and temperature changes. of rotational speed. Compared with 3 pins, the line with more than 4 pins is the speed adjustment line. The 3-pin fan does not have PWM adjustment capability, but it can detect the fan speed. The air-cooling radiator fan or water-cooling radiator fan is connected to the CPU_FAN, and the 4-pin PWM intelligent temperature control can avoid the problem of excessive noise.

• SYS_FAN interface knowledge

SYS_FAN is the system fan interface, that is Chassis fan. sys means system, fan means fan, and sys fan means "system fan", which is connected to the system fan or power supply fan interface. If the chassis fan is a 3-pin one, it can also be plugged in and used, but there will be one less speed adjustment cable.

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