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Geekworm Raspberry Pi 4 Case, Pi 4 Heatsink Case, Raspberry Pi 4 Aluminum Passive Cooling Case with Heatsink Pillar for Raspberry Pi 4 Model B 1GB/2GB/4GB/8GB Only (P232) - Newegg.com
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Official Raspberry Pi 4 Case Fan and Heatsink : ID 4794 : $5.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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