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 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.

Installed this fan on to a nVidia Jetson Nano and fit perfectly. I did get a case for the Jetson Nano that provided the appropriate screws that properly mounted the fan with though. This fan kit doesnt come with those as the parts that come with the fan are more used for mounting to a something like a computer case.

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

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

I bought this fan for use with the Nvidia Jetson Nano. The Nano automatically turns the fans on and off on demand. Cant tell is the fan is on by noise generated because there isnt any. The only problem I had installing it was because the supplied screws were too short and didnt fit the holes in the heat sink. Temporarily used round toothpicks to hold it until I can find the proper screws.

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.

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

noctua needs to fix the issue with 5v not being compatible with 12v pin headers.

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