The Raspberry Pi IO Expansion Hat is a dedicated expansion board designed to enhance your Raspberry Pi projects and simplify the process of programming with Python. It is fully compatible with Raspberry Pi models Pi 3, Pi 4, and Pi 400. The expansion hat allows you to conveniently access and utilize all IO ports of the Raspberry Pi.
One of the standout features of this expansion hat is its 40PIN comparison silkscreens. These silkscreens contain comprehensive information about the BCM code and WPI code associated with each pin. With this detailed pinout information readily available, you can save valuable time and avoid the inconvenience of frequently referring to pin comparison tables while programming with your Pi.
There are two ways to use the expansion board:

Directly plug inRaspberry Pi 3andPi 4
Connect withRaspberry Pi 400through 40PIN double-row cable

Features

Complete and detailed pin comparison silkscreen
Compatible with Pi 3, Pi 4, Pi 400
Anti-reverse plug-in horn socket design and dedicated 40PIN double-row cable

IO Port Working Voltage: 3.3V
Module Size: 65xx 65 (mm) / 2.56 x 2.56 inch

Resource

Product wiki

Shipping List

IO Expansion Hat for Raspberry Pi x1
40PIN Gray Double-row Cable Same Direction *10cm x1
Copper Column Screw Packet x1