Review on Raspberry Pi 4 Fan Quite: 4Pcs DC Brushless Cooling Fan 30Mm LED Heatsink Cooler Radiator Connector Separating 1 To 2 Interface 3 by William Turner

I bought these to replace the fan that came with my Raspberry Pi (because it was very noisy) and no problems so far. The only problem was that the screws that came with it weren't compatible with my case, but luckily I had the screws from a previous fan so that solved the problem. All in all a great product. The only thing was going back to the Revain product page to see what pins are offered for connecting the fan that could be improved with a set of instructions on a page in the box or even as part of the box. However, I am very happy about these new fans.