CP2112 USB to I2C SMBus Bridge Debug Board – HID Compliant

The CP2112 USB to I2C SMBus Bridge Evaluation Board is a compact, HID-compliant debug and development tool designed for engineers, makers, and hobbyists who need fast, reliable USB-to-I2C/SMBus communication. Whether you're interfacing with gas sensors like the CCS811, logging data, building portable controllers, or developing USB dongle applications, this board delivers versatile connectivity in a small 29.5 × 21.3 mm form factor.

Available in both Type-C and Micro-USB connector options, this board bridges the gap between your PC and I2C/SMBus peripherals without requiring a custom driver — it enumerates as a standard HID device, making setup fast and straightforward across Windows, Linux, and macOS.

Key Features

• USB HID-Compliant: No custom driver installation required — plug in and communicate immediately via standard HID protocol
• I2C & SMBus Support: Full SMBus/I2C bridge functionality for easy communication with sensors, EEPROMs, and microcontrollers
• Flexible Power Input: USB bus-powered at 4.0–5.25V; self-powered operation at 3.0–3.6V; I/O voltage range of 1.8V to VDD
• Wide Operating Temperature: Rated from -40°C to +85°C for reliable performance across a broad range of environments
• Compact SMD Design: Ultra-portable 29.5 × 21.3 mm PCB — ideal for bench testing, field data recording, and embedded development
• Dual Connector Options: Choose between Type-C or Micro-USB to match your existing setup
• Compatible with CCS811 & More: Excellent for gas sensor evaluation, Arduino projects, and other I2C-based development boards

Specifications

What's in the Box

• 1 × CP2112 USB to I2C/SMBus Bridge Evaluation Debug Board

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Frequently Asked Questions

Q: What is the CP2112 USB to I2C SMBus Bridge Evaluation Debug Board used for?

A: The CP2112 board functions as a USB-to-I2C/SMBus bridge, allowing a PC or laptop to communicate directly with I2C and SMBus peripheral devices — such as gas sensors (e.g. CCS811), EEPROMs, temperature sensors, and microcontrollers. It is widely used for firmware development, sensor evaluation, data logging, and building portable USB controller applications.

Q: Does the CP2112 board require a special driver to work?

A: No — the CP2112 is HID-compliant, meaning it enumerates as a standard Human Interface Device on Windows, Linux, and macOS without requiring a custom driver. Simply connect it via USB and begin communicating with your I2C/SMBus peripherals using Silicon Labs' API or compatible software tools.

Q: What connector types are available, and what voltage does this board support?

A: The board is available in both Type-C and Micro-USB connector variants. It supports USB bus-powered operation at 4.0–5.25V and self-powered operation at 3.0–3.6V. The I2C/SMBus I/O voltage range is 1.8V to VDD, making it compatible with a wide variety of 3.3V and 5V systems.

Q: Is this board compatible with Arduino and CCS811 gas sensor projects?

A: Yes — the CP2112 evaluation board is an excellent companion for CCS811 gas sensor breakout boards and can be integrated into Arduino-based development workflows. Its standard I2C protocol support ensures compatibility with most I2C-enabled sensors and modules commonly used in maker and embedded engineering projects.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.