[c-nsp] Inline Fan Controllers?

Steve Mikulasik Steve.Mikulasik at civeo.com
Wed Dec 17 12:35:56 EST 2014

I have used those before, it should decrease the voltage, forcing the fan spin slower. It should work in theory on any device using a 3pin connector. Possibly a defective or junky fan controller. You could put a volt meter on the end of it to see if turning the knob has any affect. 


-----Original Message-----
From: cisco-nsp [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of chris
Sent: Wednesday, December 17, 2014 10:02 AM
To: cisco-nsp at pu ck.nether.net
Subject: [c-nsp] Inline Fan Controllers?


Has anyone on the list ever messed putting in a fan controller in a switch so its inline between the motherboard and fan? I had one of these ( http://www.quietpc.com/images/products/gel-fan-controller.jpg ) laying around and plugged into a spare 2950g and 3560g I have kicking around and the fan powers up and the fan works like normal and turning the knob has no effect. I thought it would be like a standard 3 wire computer fan and that this would be easy way to lower rpm on a stock fan with replacing the fan.

This is only to minimize noise when labbing, we arent lookinng to do this to any production equipment. Anyone ever tried anything like this and had any success? I was hoping it would work because the controllers are only a few dollars and it would be cheaper and more flexible as we could move the controllers around from box to box as needed

If you have any experience with anything that worked, I would be interested to hear about it

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