Maker Hat Base - HAT & GPIO Extension for Raspberry Pi 400
Raspberry Pi 400 Expansion I/O Expansion Board – Oz Robotics
PinPal for Raspberry Pi 400 | The Pi Hut
GPIO adapter for Raspberry Pi 400
Raspberry Pi 400 GPIO Header Adapter, Header Expansion, 2x 40PIN Header
GPIO Extension Module GPIO Expander GPIO Expansion Boards for Raspberry Pi 400 | eBay
Amazon.com: Pzsmocn IO Expansion Board Compatible with Raspberry Pi 3, Pi 4 and Pi 400. with 40 Pin Contrast Silk Screen, BCM Encoding Information, WiringPi Encoding Information and Color GPIO 40 Pin Cable. : Electronics
Amazon.com: Iunius Raspberry Pi 400 GPIO Header Expansion Adapter with Color Coded Header Easy Connect to Your Pi400 Green : Electronics
Raspberry Pi 400 GPIO Header Adapter, Header Expansion, 2x 40PIN Header
Raspberry Pi 400 Gpio Expansion Board Gpio Connection Line U-shaped Breadboard Expansion Board - Demo Board - AliExpress
Amazon.com: Waveshare GPIO Header Adapter for Raspberry Pi 400 Interface Extension : Electronics
SparkFun Qwiic pHAT Extension for Raspberry Pi 400 - DEV-17512 - SparkFun Electronics
Raspberry Pi 400 GPIO Expansion Board - RobotShop
GPIO adapter for Raspberry Pi 400
Amazon.com: KEYESTUDIO GPIO Breakout Kit for Raspberry Pi - Assembled Pi Breakout + Rainbow Ribbon Cable + 400 Tie Points Solderless Breadboard : Electronics
![40 Pin GPIO Extension Cable for any 2x20 Pin Raspberry Pi [150mm / 6 long] : ID 4823 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/4823-03.jpg "40 Pin GPIO Extension Cable for any 2x20 Pin Raspberry Pi [150mm / 6 long] : ID 4823 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
40 Pin GPIO Extension Cable for any 2x20 Pin Raspberry Pi [150mm / 6 long] : ID 4823 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
![Sintron] New 40-Pin GPIO Extension Board with LCD 2004 and Micro Serv – Sintron Technology](https://sintron-hk.com/cdn/shop/products/91Foc5XULvL._SL1500_770805f3-ecbc-4aab-b47d-89b8af11a141_1024x1024@2x.jpg?v=1583144506 "Sintron] New 40-Pin GPIO Extension Board with LCD 2004 and Micro Serv – Sintron Technology")
Sintron] New 40-Pin GPIO Extension Board with LCD 2004 and Micro Serv – Sintron Technology
General Purpose Input/Output Board with Screw GPIO Expansion Board PCB I/O Expansion Module for
GPIO Adapter IO Expansion HAT for Raspberry Pi 400 – Oz Robotics
Raspberry Pi GPIO Kit Extension Board Adapter 400 Breadboard 26pin Ribbon Cable | eBay
Raspberry Pi GPIO kit extension board adapter breadboard 26pin GPIO ribbon cable | eBay
Raspberry Pi 400 GPIO Expansion Board - RobotShop
GPIO-Erweiterungsplatine GPIO-Erweiterungsmodul für Raspberry Pi 400 (zweireihig | eBay
The Pi4J Project – Pin Numbering - Raspberry Pi 400
