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

I used this fan to replace a ARX Cera Dyna FD0540-A3212A fan in my ADT DVR. The Cera Dyna was way louder. It eventually started to wobble and then it totally failed. The Noctua was a direct fit and super easy to install. Everything I needed was included in the kit. The only tools I needed were a pair of pliers and a Phillips screw driver. If I could rate this thing 10 stars, then I would. Im super happy.

Comes with splicing tool to connect with 3.3 volt rail if you want it to run slower. Very quiet

Perfect fan for a Dreamcast fan mod (3D printed mounting hardware available on eBay). Its quiet and it moves a surprising amount of air despite being tiny.

Works Great

Piece of JUNK product screw that came with the product did not fit. when you try to contact customer Service from Noctua good luck getting any support. JUNK GARBAGE product and never again.

Using this on my Ender 3 and had originally thought it did not work it was so quiet!! The PSU fan is now the loudest fan on my printer.

Ordered a 12v fan to replace a noisy fan in a new Amcrest NVR. Model received would not connect with supplied cable. Looked at sticker on the fan: it was a 5v fan. Returned unit.

Great as usually

As expected, prompt delivery, would order again

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.