Chassis and cpu fans may use either 3 pin or 4 pin power connectors.
Cpu fan 3 pin 4 pin.
Do not use it for standard 4 pin rgb or 5 pin rgbw devices.
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Some fans may have a 4 pin connector but only 3 wires going into the back of the connector.
This is still considered a 3 pin fan.
A four pin connector is a little different than the three pin connector since it has the extra fourth wire used for controlling and sending signals to the fan which likely has a chip on it that tells it to slow down or speed up in addition to the other wires the three pin connector has.
3 pin connectors are usually used for the smaller chassis fans with lower power consumption.
This cable is designed for 3 pin addressable rgb led fans and addressable rgb capable motherboard only.
4 pin connectors are usually used by cpu fans with higher power consumption.
A 4 pin pwm fan connector will have four square holes on the front and four wires entering the back.
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Case fan accessory color.
Fans and on board fan headers are backwards compatible.
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