Question 1

Does this fan have a two or three wire connection and is the connector a standard fan to mother board connector?  This application is for a electro-thermo wine cooler so the interface is constrained.

Accepted Answer

I have one opened up in front of me right now. This model has a 3-wire motherboard header connector, versus a larger 4-wire Mollex power supply connector.

The wires are: DC plus and minus (red and black) and a 3rd yellow tachometer lead that motherboards can use to monitor the fan's RPM speed. The 3rd yellow lead is frequently used to monitor the fan operation and to sound an alarm if the fan rotor seizes, or gets slowed down below a set point, due to dust buildup.

The other pulse width modulated (PWM) model has a 4-wire motherboard connector that has a 4th blue lead added that a mainboard can use to vary the fan's speed over a specified RPM range.

I have used these fans in my customer builds for over eight years and never had one come back, or fail while in service. They are typically very quiet and reliable.

They are not designed for high CFM air-flows, they are built to be quiet. I have used them in PC designs that were to be installed in clients bedrooms and media centers. They are whisper quiet for those applications. Not sure about using one in a wine cooler; I am not familiar with that application.

Hope this helps,

Mooreman

Question 2

3 pin or 4 pin?

Accepted Answer

This is a 3 pin fan.

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