GPIO pin header expander for Raspberry Pi 3/2 / B Botland - Robotic Shop
GPIO Ribbon Extension Cable for HATs and Mini HATs
For Raspberry Pi Pico GPIO Breakout Extender DIY Expansion Board No Need to Solder External Sensor
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
Pi Port Extender Kit for Raspberry Pi 3/ Pi 2/ Model B+
GPIO Extension Module PCB General Purpose Input/Output Board with Screw GPIO Header Extender for Raspberry Pi 400 GPIO Expander - AliExpress
RPI GPIO Expansion Extension Board
Raspberry Pi Pico GPIO Expansion Board GPIO Extender
Raspberry Pi 40-pin GPIO 1 to 2 Extender – Geekworm
40-way Protected GPIO Extender for Raspberry Pi - Kit | Kiwi Electronics
Programmable USB HID board for up to 10 buttons USB to GPIO Extender Module With 10 Inputs / 4 Outputs. Compatible with Raspberry Pi. - Newegg.com
Quad GPIO Expander For Raspberry Pi Pico, Four Sets Of Male Headers For Connecting More Expansion Modules, USB Power Input Connector | Pico-Quad- Expander
SparkFun Qwiic pHAT Extension for Raspberry Pi 400 - DEV-17512 - SparkFun Electronics
32 Channel Digital Expansion HAT for Raspberry Pi - RobotShop