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Amazon.com: Raspberry Pi Fan 4B Dual Cooling Fans with Automatic Discoloration LED Raspberry Pi 4B Heatsink kit with 4 Cooling Fin Raspberry Pi GPIO Expansion Board Compatible with Raspberry Pi 4B/ 3B+/
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Raspberry Pi Fan Pins (An Easy Cooling Solution) | PiCockpit | Monitor and Control your Raspberry Pi: free for up to 5 Pis!
![Miniature 5V Cooling Fan for Raspberry Pi (and Other Computers) : ID 3368 : $3.50 : Adafruit Industries, Unique & fun DIY electronics and kits Miniature 5V Cooling Fan for Raspberry Pi (and Other Computers) : ID 3368 : $3.50 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-blog.adafruit.com/uploads/2017/02/3368_iso_ORIG.jpg)