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Author Topic: Fan hook up question  (Read 700 times)
Fritzson
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« on: January 17, 2008, 11:06:31 PM »

I am about to build a new computer ( never done it ) and need some help and explanations as to fan hook up.
My case is an Antec 9000,motherboard Asus M2N32 SLI Wireless Edition.

The fans have a connector with 4 pins on one side and 4 "holes" on the other side.I assume that the 4 pins get
connected to the power supply which delivers 12 volts to turn the fan.

I assume the connectors with the 4 "holes" get  connected to the motherboard but I do not understand what the
purpose of that connection is.It seems to me that the fans already have power ( from the power supply ).

I appreciate if you could explain where I am wrong.

Thanks

Fritzson
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redaxe
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« Reply #1 on: January 18, 2008, 09:17:38 AM »

If you didn't hook up the "4 holes", your computer couldn't possibly make use of the SmartFan usage feature that most motherboards offer nowadays. It would always be blowing full blast, instead of being regulated as needed.

It also houses the fan sensors, so that your system will know if the fan fails, e.g. bearing has broken and the fan has stopped.
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