GPIO pin header expander for Raspberry Pi 3/2 / B Botland - Robotic Shop
SparkFun Qwiic pHAT Extension for Raspberry Pi 400 - DEV-17512 - SparkFun Electronics
GPIO Expander For Raspberry Pi Pico, 1x Raspberry Pi Standard 40PIN, 1x Pico 2×20PIN | Pico To HAT
RPI GPIO Expansion Extension Board
Quad GPIO Expander For Raspberry Pi Pico, Four Sets Of Male Headers For Connecting More Expansion Modules, USB Power Input Connector | Pico-Quad- Expander
GPIO Extender Board for Raspberry Pi B B+ 2B 3B | Makerfabs
Raspberry Pi 40-pin GPIO 1 to 2 Extender – Geekworm
Amazon.com: Geekworm GPIO Extender (G341) / Micro Connectors 1-to-2 40 Pin GPIO Expansion Board for Raspberry Pi 4B/3B+/3B/ Zero 2W/Zero W : Electronics