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GPIO Header for Raspberry Pi A+/B+/Pi 2/Pi 3/Pi 4/Zero [2x20 Female Header] : ID 2222 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
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Amazon.com: 40 PIN GPIO Header Adapter Color-Coded Header Expansion Board for Raspberry Pi 400,Easy Expansion : Electronics
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Raspberry Pi 400 Gpio Header 2x40 Pin Gpio Expansion Board For Raspberry Pi 400 - Demo Board Accessories - AliExpress
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