HiLetgo 4pcs DC 12V 4010 Fan 3Pin Computer CPU Cooler Mini Cooling Fan 40x40x10mm Small Exhaust Fan for Ender 3 CR10 3D Printer

I needed a replacement for one of the fans on my Anet A8 printer, and this fit perfectly. The original fan only had power and ground, and this one has the third wire for speed control, but I just cut that one off, and spliced the power and ground in, and it works great. The best part, is that I have extras now that I can use for other projects.

Pros: works well, consistent rpm, simple replacement fan for 3d printer, raspberry Pi, etc...price- 4 fans for 7 BUCkS is a crazy good deal,Cons: noise- it's a little loud compared to others, particularly compared to noctua.Use case: I used this to replace a hot end fan on a Creality CR10 3d printer. The original fan fatigued and a fan blade cracked off making it near unusable. I soldered on the new fan and it's back up and printing again.

I was so happy to find a replacement for the fans in two of my ADJ Inno Pocket Spot moving head dj light.Many people have stated that they have broken the housing when screwing then in. I have a suggestion. Before installing the fan, take your screws and very slowly & carefully install the screw into the hole. Turn the screw a little and stop, then a little more and stop again. Do this until it’s fully screwed in, then repeat with all screws. Leave them installed for awhile prior to installing into whatever you’re working on. When ready, just gently unscrew them. Now when you install it, there are grooves established and it’s less likely to crack.

When originally installed, they were ok but after time they get louder and louder. The fan is installed in the side of an enclosure and in my garage so not causing any problem but sounds like it's gonna explode.

no problems no issues thank you

Only 2 worked only one works below 12v and tops out at 200 rpm useless as a fan. I want my money back.

Perfect to vent my dell Optiplex SFF, cools it off nicely a drop of 10 degrees celcius

Fans are loud, and a couple of them feel like their bearings are failing depending on the angle you hold them. Inserting a fan screw into a mounting hole causes the hole to split and crack, therefore making this impossible to mount correctly. Bought these for a ubiquiti 24 port switch, guess they work as a proof of concept that the fans are replaceable but no much else. It was hard to tell if these were moving any air.