This board simplifies connecting wires to the Raspberry Pi GPIO, serving as a reliable reference tool. Effortlessly check your connections with its intuitive design.Benefits include categorized pin groups for I2C, IO, UART, SPI, and power, ensuring accurate connections. Its 0.8mm thickness and foolproof design prevent incorrect installation while doubling as a convenient keychain.Compatible with the Raspberry Pi Model B, it attaches seamlessly to the 2x13 GPIO header. Use premium jumper wires with female sockets for optimal connectivity.This version is not suitable for Raspberry Pi Model B+, although a compatible version exists. Note the label correction: pin #21 should read #21/27, and the subsequent pin should be #22. https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2025-11-01 https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2025-12-14 https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2025-12-19 https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2026-01-23 https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2026-01-29 https://elecena.pl/product/29469444/adafruit-gpio-reference-card-for-raspberry-pi-model-b 2026-04-08