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Recommendations for a quiet 48 port gigabit smart managed POE switch ?
This thread has 9 replies. Displaying all posts.
Post 1 made on Saturday August 1, 2020 at 04:26
obletihucp
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Could anyone recommend a quiet 48 port gigabit smart managed POE switch ?

I have use lots of netgear ones in the past but the fans in them are extremely noisy.
Post 2 made on Saturday August 1, 2020 at 13:35
lippavisual
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All 48 port poe models will have fans in them. There's a good chance the heat will need to be dissipated, hence why they have fans.

If you're technically inclined, you could buy better fans to replace the stock ones.
Post 3 made on Sunday August 2, 2020 at 01:15
SammPX
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If you care to install and support unifi, Id suggest 2x 24 port 250 watt and swap out the fans for quieter models. Ive swapped out fans on the Pro4 router and the sound level drops considerably with the aftermarket fans.
Post 4 made on Sunday August 2, 2020 at 12:23
buzz
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PoE switches dump considerably more heat than regular switches. Do you need PoE on all ports? If not, you could use a smaller PoE switch to support the PoE devices and cut down on total heat generation.

Also, the fans are often variable speed. If you can create better cooling for the whole enclosure, the fans may run at a quieter speed.

I had an interesting experience with a Ubiquiti PoE switch. I wanted to mount it under a shelf, in a cabinet. Cabling was easier if I mounted the switch upside down. The switch was a screamer and could be heard on the entire first floor. On a hunch I remounted the switch, mumbling about the difficult cable access, but the switch was much, much quieter. Depending on overall environment temperature, the fans did not run at all.

I have a customer who is a fan freak and has scattered a zillion external fans around his space, pointed at equipment. Units that typically run uncomfortably hot to touch, are now nearly room temperature.
Post 5 made on Sunday August 2, 2020 at 12:29
tomciara
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I would point out that moving air creates noise. And if you want electronics to last and not fail prematurely, you need to move a lot of air over hotspots. Putting in a smaller fan or quieter fan? If it means reduced airflow, may or may not be advisable. The fan is making noise because it is moving air rapidly over very hot electronic spots. Creating the capacity to power multiple devices means a power supply that generates some heat.
"People almost invariably arrive at their beliefs not on the basis of proof but on the basis of what they find attractive." - Blaise Pascal
Post 6 made on Sunday August 2, 2020 at 15:37
BlackWire Designs
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The luxul 5248P has a squirrel style fan so it moves a ton of air with out making much fan noise.
BlackWire Designs
Post 7 made on Sunday August 2, 2020 at 16:45
tomciara
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On August 2, 2020 at 15:37, BlackWire Designs said...
The luxul 5248P has a squirrel style fan so it moves a ton of air with out making much fan noise.

That is great, until the squirrels get tired!
"People almost invariably arrive at their beliefs not on the basis of proof but on the basis of what they find attractive." - Blaise Pascal
Post 8 made on Monday August 3, 2020 at 01:31
iform
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Aren't the new Unifi POE Gen2 switches fanless?
Post 9 made on Wednesday August 5, 2020 at 02:15
davidcasemore
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On August 3, 2020 at 01:31, iform said...
Aren't the new Unifi POE Gen2 switches fanless?

Well, I don't know anyone that likes 'em.
Fins: Still Slamming' His Trunk on pilgrim's Small Weenie - One Trunk at a Time!
Post 10 made on Wednesday August 5, 2020 at 14:57
SammPX
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On August 2, 2020 at 12:29, tomciara said...
I would point out that moving air creates noise. And if you want electronics to last and not fail prematurely, you need to move a lot of air over hotspots. Putting in a smaller fan or quieter fan? If it means reduced airflow, may or may not be advisable. The fan is making noise because it is moving air rapidly over very hot electronic spots. Creating the capacity to power multiple devices means a power supply that generates some heat.

I think it's more that Unifi is cheap and didn't want to spend extra $$ per unit on a quality part. I've got these in my Pro4 and it runs quieter and cooler

[Link: amazon.com]


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