Dell PowerConnect 2824

[JustAnotherGuitarist]

Hey everyone!

So I've been gifted a PowerConnect 2824 from work. The only thing is, this little guy is LOUD for a home environment. Does anyone have any recommendations or favorite 40mm fans that they use which are pretty quiet and would work with the switch?

Thanks!

 

[jsmithepa]

Open it up and find out for sure, these are most likely 12v straight fan. PC building people rave about the Noctua brand of fans for quietness. So straight means either 2 or 3 pins, 4 pins won't work. 3 pins, just bypass the RPM reading pin.

But don't expect miracles, these data center equipment priority is not fan noise, or maybe even power consumption!

 

[JustAnotherGuitarist]

Open it up and find out for sure, these are most likely 12v straight fan. PC building people rave about the Noctua brand of fans for quietness. So straight means either 2 or 3 pins, 4 pins won't work. 3 pins, just bypass the RPM reading pin.

But don't expect miracles, these data center equipment priority is not fan noise, or maybe even power consumption!

This is actually a 5v straight fan (3pin) at .24 amps. Seems like an odd amperage to me but I've found this Noctua that might work:

http://www.amazon.com/Noctua-NF-A4-40mm-10mm-5-Volt/dp/B00NEMGCIA/ref=sr_1_2?ie=UTF8&qid=1446225898&sr=8-2&keywords=noctua+40mm+fan

Good call about the power consumption too.

 

[jsmithepa]

http://www.amazon.com/Noctua-NF-A4-40mm-10mm-5-Volt/dp/B00NEMGCIA/ref=sr_1_2?ie=UTF8&qid=1446225898&sr=8-2&keywords=noctua+40mm+fan

Be sure the thickness is within tolerance, and verify the 3 pins, don't assume the pinout is standard.

For added quietness, use rubber mounts such as THIS.

 

[JustAnotherGuitarist]

Alright. So I'm having a little trouble with the pin outs of the stock Dell fan. It's a Delta EFB0405MD. There are three wires: Black, Red, and Blue. Red is labeled with an arrow-like symbol (or a number 1, depending on the angle in which you view it) which I'm assuming is the ground, Blue is labeled MK1A 19, and Black is labeled 5051. Which one of these is the 5V line? The Noctua I ordered comes with an OmniJoin adapter set for proprietary connections but I can't understand this pin out to wire it up. Thanks!

 

[jsmithepa]

You need a volt/ohmeter. Any cheapy one will do.

I don't know how u found out it's 5 volts, but OK, put your volt probes over the switch's header and you should be able to find out which 2 pins are the 5 volts and since the volt meter tells you polarity, that also gives you ground. To verify, I would "inject" a known 5 volts source, say from a USB charger, easy enough, into the existing fan and make sure the fans fires up.

 

[JustAnotherGuitarist]

You need a volt/ohmeter. Any cheapy one will do.

I don't know how u found out it's 5 volts, but OK, put your volt probes over the switch's header and you should be able to find out which 2 pins are the 5 volts and since the volt meter tells you polarity, that also gives you ground. To verify, I would "inject" a known 5 volts source, say from a USB charger, easy enough, into the existing fan and make sure the fans fires up.

I'm assuming it's a 5 volt line because the fan itself is a 5 volt fan. I could be wrong. Thanks for all your help, by the way

 

[Beshiros]

Did you ever attempt the mod using the Noctua fan? I'm looking to do the same mod and I was curious if you had any feedback.

Cheers,