Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)

Wow this is a QUIET tiny fan . Used it to replace a different brand 40mm fan and the noise reduction was immediately apparent. I have to stick my finger in the fan to even know its working its that quiet.

I bought this to replace the failing fan in my

great little fan I cant even hear it run!

Highest quality. Definitely worth the extra cost for Noctura products. The packaging and accessory installation options included are great! Fan is very quiet and moves a good amount of air. I purchased two of these to replace a CPU and case fan for a DVR.

I bought this Noctua since it had a reputation for being quiet and of high quality, mine was quite a bit louder than the crappy stock fan used to be in there. I might have got a dud but since I tossed the packaging right away now Im stuck with it.

Needed a fan to replace the fan I have been using on my Raspberry Pi. 24 hour operation takes a toll on the fans I tried so far. Figured maybe if I throw more money at it and hopefully get a better quality fan. Only been in operation for 3 weeks so its too soon to tell but its been humming along nicely so far. Quiet operation plus the unit comes with 3 different mounting options and 2 different adapter cables if you arent using it in a 3 pin situation which I am not in using it with a Raspberry Pi.

Extremely loud.

So quiet! Replaced a fan in my Amcrest security system that was so loud. Great product

Was looking for a fan to keep my raspberry pi cooler while I have it mounted on to a ender 3 3D printer and it does pretty good, even with it being in inside a enclosure tent for the printer.

These fans are great!