![Ultra-thin Raspberry Pi 4 Case X-C1 Kit V2.0, NUC Style Aluminum Case with PWM Fan | Auto Power On | Safe Shutdown - AliExpress Ultra-thin Raspberry Pi 4 Case X-C1 Kit V2.0, NUC Style Aluminum Case with PWM Fan | Auto Power On | Safe Shutdown - AliExpress](https://ae01.alicdn.com/kf/Sfb8cf8dc786946f2803c9e28fea0a763m/Ultra-thin-Raspberry-Pi-4-Case-X-C1-Kit-V2-0-NUC-Style-Aluminum-Case-with.jpg)
Ultra-thin Raspberry Pi 4 Case X-C1 Kit V2.0, NUC Style Aluminum Case with PWM Fan | Auto Power On | Safe Shutdown - AliExpress
The Pi Hut - Check out this neat little fan controller board for your # RaspberryPi. It uses a load switch and a line in the config.txt file to turn a fan on
![PWM Regulated Fan Based on CPU Temperature for Raspberry Pi : 4 Steps (with Pictures) - Instructables PWM Regulated Fan Based on CPU Temperature for Raspberry Pi : 4 Steps (with Pictures) - Instructables](https://content.instructables.com/FIJ/073Q/KK5FRKGI/FIJ073QKK5FRKGI.png?auto=webp&crop=1%3A1&frame=1&width=320)
PWM Regulated Fan Based on CPU Temperature for Raspberry Pi : 4 Steps (with Pictures) - Instructables
![Raspberry Pi CPU Fan Automation - #37 by Mariusthvdb - Share your Projects! - Home Assistant Community Raspberry Pi CPU Fan Automation - #37 by Mariusthvdb - Share your Projects! - Home Assistant Community](https://community-assets.home-assistant.io/original/3X/8/4/84c2e73f6b548306ed80184ec9a33703b98a25ee.jpeg)
Raspberry Pi CPU Fan Automation - #37 by Mariusthvdb - Share your Projects! - Home Assistant Community
![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+, 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+,](https://m.media-amazon.com/images/I/61xbw7BvsuS.jpg)