The Adafruit USB C Breakout Board (Downstream Connection) gives you easy access to all the pins on a USB Type-C connector, configured for downstream device use. Two 5.1K resistors on the CC1 pins signal the upstream host to provide 5V at up to 1.5A, mimicking classic USB 2.0 behaviour.

For most projects, simply connect VBUS to your 5V input, GND to ground, and D+/D- as usual. The CC and SBU pins are broken out for advanced use cases like detecting cable polarity or sending sideband data, but can be left disconnected for standard USB 2.0 operation.

Key Features

• USB Type-C Connector – Symmetric, reversible connector for modern USB connections
• Downstream Configuration – Pre-configured with 5.1K CC resistors for device/sink mode
• All Pins Broken Out – Access to VBUS, GND, D+, D-, CC1, CC2, and SBU pins
• USB 2.0 Compatible – Works as a drop-in replacement for Mini or Micro B connectors
• Up to 1.5A – CC resistor configuration requests up to 1.5A from the host (actual current depends on the upstream source)
• Breadboard Friendly – Standard 0.1" pin spacing
• Compact Size – 20.4 × 14.2 × 5.0 mm (0.8" × 0.6" × 0.2")

Ideal For

• Upgrading projects from Micro B or Mini B to USB-C
• Prototyping USB-C powered devices
• USB 2.0 data connections with a modern connector
• Learning about USB-C pin configuration and signalling

Package Contents

• 1× Adafruit USB C Breakout Board - Downstream Connection

Resources

• Introduction to USB Type-C (Microchip App Note, PDF)
• EagleCAD Design Files (GitHub)