![Amazon.com: Cooling Fan for Raspberry Pi 4B/3B+/3B Low-Profile CPU with Aluminum Alloy Bracket and GPIO Fan Adapter @XYGStudy (PI-FAN-3007-B) : Electronics Amazon.com: Cooling Fan for Raspberry Pi 4B/3B+/3B Low-Profile CPU with Aluminum Alloy Bracket and GPIO Fan Adapter @XYGStudy (PI-FAN-3007-B) : Electronics](https://m.media-amazon.com/images/I/51K8xIQ3uqL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Cooling Fan for Raspberry Pi 4B/3B+/3B Low-Profile CPU with Aluminum Alloy Bracket and GPIO Fan Adapter @XYGStudy (PI-FAN-3007-B) : Electronics
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Amazon.com: GeeekPi 2PCS Raspberry Pi 4 PWM Controllable Fan, Raspberry Pi PWM Speed Adjustment Fan 40x40x10mm, Raspberry Pi Speed Control Fan DC 5V 4010 Quiet Fan for Raspberry Pi 4, 3 B+,
![Argon Raspberry Pi 4 Mini Cooling Fan Hat PWM Speed Control GPIO Fans Copper Metal Base Radiator for Raspberry Pi 4 Model B - AliExpress Argon Raspberry Pi 4 Mini Cooling Fan Hat PWM Speed Control GPIO Fans Copper Metal Base Radiator for Raspberry Pi 4 Model B - AliExpress](https://ae01.alicdn.com/kf/H02c90a39af2d4cde8bd84c68f2a551f1C/Argon-Raspberry-Pi-4-Mini-Cooling-Fan-Hat-PWM-Speed-Control-GPIO-Fans-Copper-Metal-Base.jpg)
Argon Raspberry Pi 4 Mini Cooling Fan Hat PWM Speed Control GPIO Fans Copper Metal Base Radiator for Raspberry Pi 4 Model B - AliExpress
![GitHub - hamzab70/Raspberry-Pi-Fan-Script: Simple Bash script to control the fan speed using the Rapsberry Pi GPIO and a transistor. GitHub - hamzab70/Raspberry-Pi-Fan-Script: Simple Bash script to control the fan speed using the Rapsberry Pi GPIO and a transistor.](https://raw.githubusercontent.com/hamzab70/Raspberry-Pi-Fan-Script/master/Electrical-Scheme.png)