IO Expansion Hat for Raspberry Pi 3/4/400

Stop constantly looking up GPIO pinouts with this expansion HAT featuring comprehensive silkscreen labelling. All I/O ports are broken out with detailed BCM and WiringPi code references printed directly on the board for quick reference during development.

The HAT plugs directly onto Raspberry Pi 3/4 or connects to Pi 400 via the included ribbon cable. An anti-reverse socket prevents incorrect connection.

Key Features

• Detailed Pin Labels – BCM and WiringPi codes on silkscreen
• All GPIO Exposed – Full 40-pin access
• Anti-Reverse Socket – Prevents incorrect connection
• Ribbon Cable Included – For Pi 400 connection
• Mounting Hardware – Standoffs included

Specifications

• I/O Voltage – 3.3V
• Dimensions – 65mm × 65mm

Compatibility

• Raspberry Pi 4
• Raspberry Pi 3 / 3B+
• Raspberry Pi 400 (via cable)

Ideal For

• GPIO development and testing
• Learning Raspberry Pi pins
• Rapid prototyping
• Educational projects

Package Contents

• 1× IO Expansion HAT
• 1× 40-pin ribbon cable (10cm)
• 1× Mounting hardware (standoffs/screws)