[c-nsp] Inline Fan Controllers?

Vincent C Jones v.jones at networkingunlimited.com
Wed Dec 17 20:30:26 EST 2014

I did this to a Cisco/Linksys 2008 switch using a 5V 3-wire voltage
regulator to bring the tiny fan's speed down from howling loud to quiet
enough for desktop use. Only then did I discover that the box was so
electrically noisy that it wiped out the local AM NPR station. 

Anyone looking for an acoustically quiet 8 port POE gigabit switch who
does not listen to weak AM radio signals can contact me off-line :-]


On Wed, 2014-12-17 at 12:02 -0500, chris wrote:
> Hello,
> 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
> chris
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

More information about the cisco-nsp mailing list