Noctua NF-A4x20 5V PWM, Premium Quiet Fan, 4-Pin, 5V Version (40x20mm, Brown)

easy to install, will buy again

Great quite fan with this and Igus Linear bearing cant here my printer run.

Im using this with the Jetson Nano. You cant hear it at all, even at full speed!

I am really impressed with the amount of additional cables, connectors, and mounting options provided. I ordered the fan to place inside of a fursuit (costume) head. It is very quiet, if even one person is talking you cannot hear it running. The air flow is low, but it is constant and hands free so that is very nice. I thought it might be much louder than it was which is why I ordered the PWM version. Since it is *so* quiet theres no reason to not let it spin at full speed unless your application is severely power limited.

Plugged right into my nVidia Jetson Nano. Variable speed works great.

Super quiet fan. My workflow improved and I can record now without the fan Boise in background.

Quiet as expected.

Very high quality fan. I needed to cool down a bit a bucket converter(step down from 36V to 12V), and this fan keep the converter very nice and cool. Too much heat is not good for you baby, that how the song says?

These are the best fans ever. Very quiet, easy to spin, move a lot of air and made of quality materials. They are a little on the expensive side, but thats because quality is more expensive.

I was replacing the 5v fan in a Netgear switch to be more quiet, but these 5V Noctuas barely move any air (Tried both the 4-pin and 3-pin version of the 5v Noctua.) I ended up putting in a 12V fan that starts at 5v (not Noctua) and it moves more air than the 5v Noctua without too much noise...