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Amazon.com: Waveshare Accessory Compatible with Raspberry Pi 4 Model B 4GB RAM with Powerful Processor Faster Networking Support Dual 4K Output and Different Choice of RAM Comes with a Copper Heat Sink :
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Amazon.com: Raspberry Pi 4 Computer Model B 8GB Single Board Computer Suitable for Building Mini PC/Smart Robot/Game Console/Workstation/Media Center/Etc. : Electronics
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Raspberry Pi 4 Model B - 8 GB RAM : ID 4564 : $75.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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