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

Noctua is a get what you pay for brand. They are expensive fans. But quiet and reliable. Definitely made the router under my desk quieter. Unlike some of the cheaper quiet fans, these guys will run for years and stay quiet.

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

Excellent fan but could have been a lower price.

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?

Title says it, this fan does a great job at cooling a raspberry pi 4. With a little modification to the case

The rubber anti-vibration pads can squeeze out and detach if you sandwich the fan between a fan guard and a Jetson Nanos heat sink then bolt it down tight.

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.

Noctua sets the standard for small, quiet, functional fans. My only desire is for Noctua to eventually adopt much thinner packaging. The current packaging, clearly design to reveal the products premium experience, is needlessly inconsiderate of its environmental impact.

Excellent fan. Very low, if any, noise. I dont hear it. Mounted as a VRM cooler on my ASUS Prime Z370-A mobo.

This worked perfectly. Made my printer so much quieter