SEL CP210x USB to UART Bridge (COM3) Driver

The SEL CP210x USB to UART Bridge (COM3) driver enables Windows to recognize the USB-to-serial interface used with compatible Schweitzer Engineering Laboratories equipment. It provides a virtual COM port so supported applications can communicate with connected hardware, making it useful for technicians and engineers who need a reliable serial connection over USB.

Key Features

• Virtual serial port support: Allows compatible software to access the USB-connected interface through a Windows COM port.
• Device recognition: Helps Windows identify the SEL CP210x USB to UART Bridge rather than leaving it listed as an unknown device.
• Legacy Windows compatibility: Supports Windows 10, 8.1, 7, Vista, and XP when you select a driver package appropriate for your operating system and architecture.
• COM port management: Makes the interface available in Device Manager, where you can check its status and confirm the assigned port number. Although the device name includes COM3, Windows may assign a different number.

How to Install SEL CP210x USB to UART Bridge (COM3) Driver

1. Check your Windows version. Confirm your operating system and whether it is 32-bit or 64-bit. For Windows 10/11 systems, note that Windows 10 is listed as supported here; Windows 11 compatibility must be verified with the vendor.
2. Choose the correct package. Before starting your SEL CP210x USB to UART Bridge (COM3) driver download for Windows, verify that the package supports your device and OS. Use an official or trusted source offering a free download, and select the latest version compatible with your setup.
3. Run the installation. Extract the downloaded archive if necessary, then launch the installer and follow its instructions. If the package has no installer, use Device Manager’s Update Driver option to browse to the extracted driver folder.
4. Connect and verify the device. Follow any connection instructions supplied with the package. Open Device Manager and check under Ports (COM & LPT) for the interface and its assigned COM number.
5. Configure your application. Select the matching COM port in your communication software and use the serial settings required by the connected equipment. Restart Windows if prompted.

Keep the driver updated when a compatible release addresses connection issues or improves support for your system. Before you install an update, review its compatibility notes—particularly on older Windows versions—and retain a working driver package in case you need to roll back.