DFRobot (DFR0828) IO Expansion Hat, Raspberry Pi 3/4/400

Product Information Add-On-Card & Module Type: - Accessory Type: IO Expansion Hat For Use With: Raspberry Pi 3/4/400 Product Overview IO expansion hat for Raspberry Pi 3/4/400. This IO expansion hat specially developed for Raspberry Pi is perfectly compatible with Pi 3, Pi 4 and Pi 400. All IO ports of Raspberry Pi are led out one by one. Most importantly, the hat provides 40PIN comparison silkscreens that contain detailed BCM code and WPI code information which saves the trouble of frequently checking pin comparison table when programming with Pi. There are two ways to use the expansion board such as Directly plug in Raspberry Pi 3 and Pi 4 and connect with Raspberry Pi 400 through 40PIN double-row cable. 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 3.3V IO port working voltage