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

Accessory Type: IO Expansion HatFor Use With: Raspberry Pi 3/4/400Product OverviewIO expansion hat for Raspberry Pi 3/4/400. This IO expansion hat speciallydeveloped 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 hatprovides 40PIN comparison silkscreens that contain detailed BCM code and WPIcode information which saves the trouble of frequently checking pin comparisontable when programming with Pi. There are two ways to use the expansion boardsuch as Directly plug in Raspberry Pi 3 and Pi 4 and connect with Raspberry Pi400 through 40PIN double-row cable.Complete and detailed pin comparison silkscreenCompatible with Pi 3, Pi 4, Pi 400Anti-reverse plug-in horn socket design and dedicated 40PIN double-row cable3.3V IO port working voltage