Review on 🌀 High Speed Dual Ball Bearing DC 12V 80mm Cooling Fan - GDSTIME 8038 PWM 80mm x 38mm by Pedro Curtis

I installed 2 of these fans as exhaust fans in my 4U server case. I run them at about half speed and they move a lot of air. I've been using them for about 6 months with no problems until a few nights ago they ran at full blast for a few minutes until I shut down the server. Upon inspection, one of the fans had failed and damaged the fan control circuitry on the motherboard, causing any fan I connect to this fan connector to run at full speed. Hopefully nothing else is damaged, I'll be using Delta fans again.