Review on 🔧 GeeekPi 4pcs Raspberry Pi 4 Quiet Fan - Efficient Cooling Solution for Raspberry Pi 4 Model B and Earlier Versions - DC 5V 3.3V Brushless CPU Cooling Fan Cooler Radiator (Black) by Ryan Moran

The old fan has become noisy and buzzing. Good: They were quiet and efficient. Neutral: If you use a canna kit with your raspberry pi, it has mounting holes for a 30mm fan. I had to modify the body. Possibly bad: since I connected this fan to my Raspberry Pi, the Anker power supply, which used to be sufficient, is now not enough because of the low voltage warning flashing. this fan seems to be using a lot of power, maybe.