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Amazon.com: Raspberry Pi 400 GPIO Header Expansion Adapter, with Color-Coded Header,Easy Connect to Your Pi400 (Black) : Electronics
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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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GPIO Stacking Header for Pi A+/B+/Pi 2/Pi 3 [Extra-long 2x20 Pins] : ID 2223 : $2.50 : 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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Amazon.com: DVOZVO Raspberry Pi Pico W with Pre-Soldered Header, Raspberry Pi RP2040 Chip, Wi-Fi Wireless Connectivity,Pico WH with USB Cable : Electronics
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Amazon.com: Bicool Raspberry Pi Pico with Pre-Soldered Colorful Pin Header Microcontroller Mini Development Board Based on Raspberry Pi RP2040 Chip,Dual-Core ARM Cortex M0+ Processor, Flexible Clock : Electronics
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Pi-Zero-EzConnect – Securely Connect Components, Sensors, etc. to Raspberry Pi Zero 40 Pin Header – Oz Robotics
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