Review on Furiga Printer 50X50X15Mm Blower Cooling by Michael Cleveland

After running these fans for a few days, one of them started making an awful noise. Upon further investigation, it was found that there were parts inside the engine. I don't know what happened there. On my Ender 3 printer, the plus and minus do not match the polarity of the fan cable. I had to switch red wire to black wire and black wire to red for it to work. The length of the cable wasn't long enough for my Ender 3 either. In general, I would not recommend these fans.