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

Excellent fan but could have been a lower price.

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

Awsome for using on you GPUs. I have dual cards and it fits right in between them, and keeps them cool beautifully

perfect for the Nvidia Jetson Nano.

yes they look pretty funky with the colors but they do such a great job of pushing air and cooling the intended product.

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

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.

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

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!