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Amazon.com: Waveshare Accessory Compatible with Raspberry Pi 4 Model B 2GB 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: MarsKit Raspberry Pi 4 2GB Basic Kit with 5.1V 3A USB-C Power Supply and Raspberry Pi 4 case(Micro SD card not incl.) : Electronics
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Raspberry Pi 4 Model B - 2 GB RAM : ID 4292 : $45.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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