MakerFocus 4pcs 3D Printer Fan 12V, 40mm 12 Volt 0.08A DC Mini Quiet Cooling 40X40X10mm with 28cm Cable for 3D Printer, DVR and Other Small Appliances Series Repair Replacement

It's a blessing to finally not to hear the fan noise. Having 3 spares gives me peace of mind that next replacement will be quick and instant. Fan works good, and is holding up quite well. Those little fans usually have short life span, so wonder how long this one will last. On a device that runs 24/7 frequent replacements are unavoidable. You can't beat the price of this set.

These fans work as expected, noise is tolerable. I use these fans to replace the OEM fans in a Dell PowerConnect 5324 as they were very loud and had bad bearings. With all four fans running that’s when they become tolerably loud. I’m not sure if this product is designed to run 24/7 365 days a year, but that’s what they will do now.As a sidenote I haven’t actually measured the fan itself but it claims to be 40 X 40 X 10, well that’s the same measurement in the dell poweconnect 5324 according to Dells website, but the fans did not fit correct, which required me to only use one hole rather than two (which really shouldn’t be a problem), like I said I didn’t measure it so I don’t know if this is just my issue with my Dell powerconnect case, or if the fan is incorrectly measured.

Quiet. Good airflow. Works great

Ordered the wrong size. They seemed nice for the value tho. The noise level was very quiet. It also installed easy.

I did not buy the 4 fans to use with a 3D printer. I used them to help eject the fumes and smoke from my CO2 laser engraver. They work well for my use, I will buy them again. They are as described, fast delivery from Amazon.

Replaced two existing fans with failing bearings. Quiet and move a lot of air. No noticeable RF emissions.

I ordered these fans to replace the noisy fans on two 10GB Ethernet cards. I have to use plastic cable ties to put the fan on top of the head sink. It's not exactly fit but functional. The result is good only a little louder than the case fans of the computer.

Advertise as quiet cooling. These are about the noisiest fans i have ever used. I bought these to mount in a electronics enclosure for my 3d Printer. They became the loudest part but far. I pulled them out and replaced them with Noctura fans that are doing an equally good job cooling the enclosure. These fans are junk. I had to cut the cables while installing them so I can not return them, but wish I could, they are terrible.