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4 Pin out axial cooling fans

Last response: in Components
February 27, 2012 10:57:42 PM

Hi there.
I am trying to find two axial cooling fans, a 92mm and a 70mm both really need to be 4 pin out configuration for PWM as thats what the old fans where doing.

Currently i am running cool and quiet and the fans are running of the systems 5 volt rail from the psu. the machine is a Siemens Fujitsu Esprimo.
Not getting the best from it due to this cooling issue, can anyone suggest a supplier of the 4 pin out fans that accommodate PWM, running 3 pin out fans flat out is mad, and derating with a series resistor is pointless, any ideas appreciated. :) 

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