What Are Motherboard Fan Connectors? Installation & Guide In 2022

The motherboard has a limited number of fans, but if you want to connect some extra fans, you can add an extra fan to your computer. The motherboard fan connector is a small three to four pin connector located in the motherboard. The fan has a set of cables that connect to the motherboard connector.

As I say, some fans have three, and some have four connectors. But even if a fan connector has four pins, it still uses only three wires to connect with the connector. Motherboard fan pinout 4 and 3 pin fan connectors are similar in size. These are PC fan connector types.

A Molex KK connector is used to connect the motherboard’s fan. It is a member of a family of internal computer power connectors designed by the Molex Connector Company, which also produced the motherboard power connector and the larger 4-pin Molex used by earlier hard drivers. Let me guide you about what are motherboard fan connectors.

What is Molex KK Connector?

What is Molex KK Connector

The name Molex is no longer commonly used. Motherboard manuals usually use the words SYSFAN and CPU FAN when referring to these connectors. Although SYSFAN and CPUFAN are the same connectors, SYSFAN connects PC case fans, whereas CPU FAN connects the fan linked to the CPU heat sink. Don’t worry if you’ve never utilized these connections before. It is almost hard to connect them incorrectly, and they are simple to use.

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Where To Plug In Fans On Motherboard?

How to connect fans to motherboard? It would be preferable if you connected your fans to your motherboard to get the best results from your fans. You can change the fan speed from the motherboard BIOS if you connect your fans to the motherboard. However, a 4 pin cable must plug in for that choice.

Every motherboard typically includes two fan headers. If you have four-pin headers in your motherboard, search for these pins headers like system fan, power fan, extension fan and chassis fan connector.

Look at your Motherboard’s bottom-left corner if you have problems finding them. You’ll receive one header very shortly. It’s time to connect the Header after you’ve located it. Every connector will have two bumpy tabs at the beginning and end of the port. To fully connect the connector to the motherboard, gently press it down the header.

After that, you’re done blocking it. For neat wire management, plug the fan into the nearest fan header. Get an RGB fan for your rig that is also aura sync compatible. I think you will get some idea about what are motherboard fan connectors.

How To Install Case Fans PC?

How To Install Case Fans PC

If you wondering about what are motherboard fan connectors. Follow these steps to install pc case fans:

  • Locate an open fan slot on your computer. These are typically located at your case’s front, top, and back; some models could have one or two slots on the case’s floor.
  • Place the fan with one hand so that the screw holes line up with the holes in the case and that it faces the desired direction (depending on whether it is an intake or exhaust fan). Try to position the cable such that it faces your motherboard or the fan hub since doing so will prevent it from being stretched over the fan once it is connected.
  • Use the provided screws to mount the fan to the casing by grabbing your screwdriver with your other hand. After you’ve inserted the first screw, it ought to be secure enough that you may release the fan and use both hands to make any necessary adjustments to the screw alignment, tighten the screws more quickly, and so on.
  • It’s time to connect the cord with the fan in position. Start by tucking it beneath the motherboard tray into the cable management area, or at the very least, away from other components.
  • Simply attach the cable to a 4-pin connector on your motherboard’s system fan header or your fan hub.
  • After turning on your computer, ensure the fan is blowing air in the proper direction with your hand.

How To Connect Extra Fans To Motherboard?

How To Connect Extra Fans To Motherboard (1)

You can find it challenging to attach an additional fan to a motherboard. Our detailed instructions will outline a simple way to complete the entire process without getting lost.

  • Start by shutting down your computer and unplugging the power cord from the main power source. Next, take off the computer case’s front and side panels. The panels frequently don’t have fasteners so you may remove them with minimum effort.
  • Your computer’s airflow would be front to rear or top to bottom. To blow air directly on the motherboard, it is, therefore, advisable to position them at the front bottom of the chassis. The fans can place in the front middle position if you cannot do that for some reason.
  • To physically attach the case fan, line up its four corner holes with the case’s four matching holes and fasten it using the included case screws or fan screws. Next, physically tighten the screws into position.
  • A 3-pin or 4-pin connector connecting one end of a PC fan cable to the motherboard’s 3-pin or 4-pin fan header constitutes a common motherboard fan connector. There is no secret other than lining up the connector’s notch with the header’s key.
  • Align the two sides, carefully insert the fan connector into the motherboard’s system fan header, and double-check that the connections are secure.

How To Connect Case Fans To Power Supply?

Just keep a few things in mind before starting the steps. The Molex connector is the first type of PSU connector; if your PSU lacks one, you may require one. Choosing the location for the fan installation is the first and most important stage in this procedure.

The suction port is located in the fan’s front or face, and the exhaust port is in the back. Always place the face portion of a case fan within the enclosure, as this portion will draw away the warm air from the device. Decide where the fan’s front and back are. The front portion is open, and the casing covers the rear portion.

On each of the four casing edges of each case, fans are four screw holes. Place the fan in the desired location, then join the screws with a manual screwdriver. Hubs for fan plug connectors are included on the motherboard. Connect your addressable RGB cable pin to the closest hub of your power supply unit by following the rails on the cable.

A digital RGB cable is the second cable with three pins. Skip this step if your case fan doesn’t have a 3-pin digital RGB cable. You will notice a lot of wires dangling around the inside part of your power supply unit after connecting the case fan. To prevent the mess, take this action.

What Does a Fan Header Look Like?

PC fan has a three-pin motherboard fan connector typically contains black, red, and yellow wires, though those hues might change depending on the manufacturer and occasionally even the model.

What Does The Three-Pin Fan Connector Mean?

A three-pin connector has three pins: signal, ground, and power (5/12 volts). Without fan speed controls, the signal wire measures how quickly the fan rotates. With this kind, changing the voltage applied to the power cable often affects how fast the fan spins.

What Is The 4 Pin Fan Connector On Motherboard?

The fourth wire on a four-pin connector is used to control and send signals to the fan, which likely has a chip informing it when to slow down or speed up. It makes a four-pin connector slightly different from a three-pin connector.

Where To Plug In Fan Controller On Motherboard?

The fan controller is connected to the PSU once the fans are plugged into it. Those are substitutes. Since you are using a fan controller, connect the 3/4 pin connectors to the fan controller instead of simply connecting the fans to the motherboard or PSU.

Berry Allen

Hi, I am Berry. As an ESPORT Player, I love to play all Famous & new Games. I tested most of the PC components to boost my playing. So, I thought and made a plan to write my personal reviews on these Next-Gen Products to suggest that could help to build a perfect PC Setup and promote the gaming industry.

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