Mbed Serial Port (COM20) Driver

The Mbed Serial Port (COM20) driver enables Windows to communicate with a compatible Mbed development board through its USB serial interface. It is useful for developers, students, and electronics enthusiasts who need a serial connection for debugging, viewing diagnostic messages, or exchanging data with firmware running on the board.

Key Features

• USB serial communication: Provides access to a compatible Mbed board through a Windows COM port for use with serial terminals and development tools.
• Firmware diagnostics: Lets you read serial output from your application and send commands when the board’s firmware supports them.
• Device Manager integration: Helps Windows recognize the serial interface under Ports (COM & LPT), where you can check its status and assigned port number.
• Windows compatibility: Driver packages may support Windows 10, 8.1, 7, Vista, and XP. Confirm that the selected package matches your Windows version and system architecture before installation.

How to Install Mbed Serial Port (COM20) Driver

1. Check your board and operating system. Identify the Mbed board model and whether Windows is 32-bit or 64-bit. For Windows 10/11 systems, check the board’s documentation first: some interfaces use a built-in Windows driver. Windows 11 support is not confirmed by the compatibility list above.
2. Choose the appropriate package. Before starting your Mbed Serial Port (COM20) driver download for Windows, review the package’s supported hardware and operating systems. Select the latest version compatible with your setup, and use a trusted source offering a free download.
3. Install the driver. Extract the downloaded archive if necessary, then run the supplied installer. If the package contains driver files without an installer, open Device Manager, right-click the relevant device, choose Update driver, and browse to the extracted folder.
4. Reconnect and verify. Connect the board with a USB data cable and check Ports (COM & LPT) in Device Manager. COM20 is a Windows-assigned port number, not a distinct hardware model; your board may appear under another COM number.
5. Test serial communication. Open your terminal or development application, select the assigned COM port, and use the serial settings required by your firmware. Close other programs that may already be using that port.

Keep the driver updated when a compatible update addresses connection problems or improves support for your setup. Check the release notes before replacing a working driver, and remember that a different COM number alone does not indicate a driver fault.