Review on Wathai DC Brushless Cooling Fan: Powerful 40mm x 10mm 12V 3Pin Mini Heatsink Cooler Fans by Micael Rau

Strange PC humming noise. Please don't be my hard drive. I open the case and the sound of the fan. Jump on the Revain, enter the specs. An exact replacement is available on Prime. I say yes. Not even 2 days later there was a knock on the door. The new fan is an exact match. 4 screws and a 3 pin quick connector, I'll get it working later. 15 minute replacement from start to finish, just under $10. Quiet as a church mouse. So quiet that I open my case again to make sure it's really working. My old fan was dying a slow death and gradually getting louder than I noticed. Sweet.