What are the internal interfaces of a computer motherboard? Recommended introduction to the internal interfaces of a computer motherboard

php editor Xiaoxin introduces to you the internal interfaces of the computer motherboard. The motherboard is one of the core components of the computer. There are many types of internal interfaces, including CPU slots, memory slots, expansion card slots, SATA interfaces, and USB interfaces. wait. Different interfaces have different functions, which affect computer performance and scalability. When choosing a computer motherboard, understanding the characteristics of each interface can better meet your needs. Next, we will introduce you to the various contents of the internal interface of the computer motherboard in detail, hoping to be helpful to you.

In the process of assembling the computer, although the installation process is simple, we often encounter problems in the wiring. Often the installation user mistakenly plugs the power supply line of the CPU radiator into the SYS_FAN, although the fan can Turn it on, but there may be an F1 error "CPU Fan Error" when booting, which also prevents the CPU radiator from intelligently adjusting the speed. Let's share the common knowledge about the CPU_FAN, SYS_FAN, CHA_FAN, and CPU_OPT interfaces on the computer motherboard.

Popular knowledge on the CPU_FAN, SYS_FAN, CHA_FAN, and CPU_OPT interfaces on the computer motherboard

1, CPU_FAN

CPU_FAN is the CPU cooling Special interface for the fan, 12V working voltage, 4PIN (pin), the 4-pin fan has a PWM intelligent speed adjustment function, which can intelligently control the fan speed according to the load and temperature changes. 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.

CPU_FAN

2. SYS_FAN

SYS_FAN is also called "system cooling fan socket", 4PIN (pin), general It is connected to the chassis fan. Some installed users may add chassis fans in order to have better heat dissipation conditions inside the chassis, or to build air ducts, and they will all be connected to the SYS_FAN interface. If the chassis fan is 3-pin, it is It can be plugged in and used, but there is one less speed adjustment cable. In addition, some motherboards have CHA_FAN, which is a chassis fan, but you can also use it to connect other 12v fans.

SYS_FAN

If there is only one CHA_FAN or SYS_FAN on the motherboard, and there are multiple chassis fans, how do you connect them? These fans are all 4 Yes, if you want to achieve speed adjustment or divine light synchronization, you can just buy a fan hub (FAN HUB).

3. CPU_OPT, aio_pump

CPU_OPT and aio pump are special interfaces for water-cooling pumps. If you have split water cooling, they are generally connected to the water-cooling pump.

aio_pump

There are also some biased ones, chip_fan belongs to the north bridge fan, and PWR_FAN belongs to the power supply fan, which are generally not used.

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