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

Pretty silent cooler for Raspberry Pi tower. Main chip temperature can be reduced to 35 degrees.

I should have click the buy button on the two(2) fans package from a different maker for roughly the same price. You are paying more marketing , and silly fold out displays, tons of fancy packaging, it come packed in alot of plastic which could be cardboard, three sets of oddball extra cables just throw 50% of the package contents in the trash. I am using this on a jetson nano and it sounds a performs the same as the stock one. I used thin guage wire to attach the fan and just twisted it to sung it down. All the connectectors that cam with it i just tossed the the trash.

This fan is quiet, feels well built and works perfectly with my Jetson Nano kit.

This is a quiet operating fan and it cools extremely well akso. It is easy to install and a Quality product!

I use M2.5 screw and M2.5 nut as washer.

easy to install, will buy again

Product advertised as quiet, sounds like a rocket ship. Too loud for silent setup use. Will be returning.

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?

I purchased this fan as a replacement for the one which came with ICY DOCK ToughArmor HDD enclosure. I went with Noctua brand because of the reviews and I am really impressed with the product. The build quality is pretty good and noise level is perfectly suited for desktop PC installation. I was looking for a fan that can operate quietly and at the same time provide adequate airflow into the HDD enclosure. This product lives up to its great reviews and reputation. There is nothing much for me to say, I would definitely recommend it.

Works great!