Wathai 40mm x 20mm 12V Dual Ball Bearing DC Brushless Cooling Fan for 12 Volt PSU Replacment, DIY Small Electronic Equipment Cooling

My TP-Link er8411 router suffered a broken fan in transit and these fixed it right up. I did have to reverse the black and yellow wires on the fan’s plug. Apparently TP-Link uses a standard fan connector but not a standard pinout. These fans are quiet enough. They are slightly audible when running but cannot be heard with the door to my network closet closed. Installation was simple. The fans come with mounting hardware but I just reused the hardware already in place. The quality seams decent. Not the highest quality but not the worst either.

I'm a big fan of this brand! Fans work well, aren't super loud at low rpm and keep things cool.i did have to move the pins for my install (cisco 2801) but they work flawlessly and are so much quieter than the old OEM fans!

Loud as hell but blows a lot more air then the thiner fans around the same voltage. If you need a fan this size that blows more air and don't mind the volume then it is excellent.

This fan is a must-have in a single-board computer case build. Using Stress-ng for a 10-minute 8-core cycle on an RK3588 (octacore), I realized a 5C delta between running the fan at 3.3 volts versus 5 volts. Heat is the enemy of efficiency and endurance; this fan gives me the performance I desire and the peace of mind knowing the gear will get its best chance at longevity.Generic 40mm x 10mm fan (3.3 volts): ~85C on Big CoresWathai 40mm x 20mm fan (3.3 volts): ~70C on Big CoresWathai 40mm x 20mm fan (5 volts): ~65C on Big Cores

I recently purchased a BESTEK 300Watt Pure Sine Wave Power Inverter but the fan it came with was noisy. This was a perfect fit and runs very quiet.A couple things you need to know. This fan will not accept the self tapping screws the BESTEK fan uses so you will need to use the long bolts that come with this, and they will need to be trimmed so they don't touch the internals of the inverter. You can install them backwards leaving the longer portions protruding from the inverter case, which is what I chose to do.Also a minor thing is, the wire is a bit longer than the BESTEK's so you will need to route it in a way so that it doesn't interfere with the movement of the fan.Sorry I didn't take photos, I didn't think about it until after I put everything together but I am really happy with this fan. No more screaming like it's gonna die noise from the BESTEK.

I have many different fans made by this brand; they are my first choice when I am looking for a DC fan. This little powerhouse is fantastic however it is very loud. I bought it to replace the fan on my diode laser engraver module and it works well, much better than stock. I don't mind the noise since it's used in an enclosure, and I don't have to sit next to it for long periods. I highly recommend this fan if noise isn't an issue and certainly recommend this brand for all of your DC fan needs. I think I have only had one to fail on me within a short time period and the seller quickly replaced it.

The fan works fine, despite forgetting to check the plug type before I bought it. I still made it work on my DVR. However, it is EXTREMELY LOUD and shakes the little DVR case to the point I had to put some foam wrap (typically used for packaging material) under the DVR to prevent the vibration from rattling the entire shelf it sits on. No exaggeration. This is in an enclosed mechanical room, but I could still hear the vibration THROUGH THE WALLS.If you need to make a tornado in a bottle, this is the fan for you. Otherwise, check out AD0412MX-G70 for a SILENT 40 x 10 mm fan.

I just matched up the dimensions and other specs of the old fan. It was an easy swap out, and saved an expensive battery charger for few $$'s