MicroLink HART Protocol Modem (COM9) Driver

The MicroLink HART Protocol Modem (COM9) driver allows Windows to recognize the Microflex USB modem and provides the serial connection used by compatible HART communication software. It is intended for technicians and engineers who connect a PC to HART-enabled field instruments for configuration, diagnostics, and maintenance.

Key Features

• USB-to-serial communication: Makes the modem available through a Windows COM port so compatible applications can communicate with connected HART instruments.
• HART software connectivity: Provides the connection layer needed by supported instrument configuration and diagnostic tools; the driver does not replace those applications.
• Windows compatibility: Listed operating systems include Windows 10, 8.1, 7, Vista, and XP. Choose a package that matches your Windows version and system architecture.
• COM port identification: Lets you check the modem’s assigned port in Device Manager. Although the device name includes COM9, Windows may assign a different port on another computer or USB connection.

How to Install MicroLink HART Protocol Modem (COM9) Driver

1. Check your system. Confirm your Windows version and whether it is 32-bit or 64-bit. If you are comparing Windows 10/11 support, note that Windows 11 is not included in this device’s listed supported operating systems; verify compatibility with Microflex before proceeding.
2. Select the correct package. Before starting a MicroLink HART Protocol Modem (COM9) driver download for Windows, verify that the package is intended for this Microflex modem. Look for the latest version compatible with your system, rather than assuming the newest release supports every older Windows edition. For any free download, check the source and publisher.
3. Install the driver. Extract the downloaded archive if necessary and follow the included instructions. Run the installer if provided, or use Device Manager’s Update driver option to select the extracted driver folder. Follow the package’s guidance on when to connect the modem.
4. Verify detection. Connect the modem and open Device Manager. Check that it appears without a warning icon, then note its assigned COM port.
5. Configure your application. Select that COM port in your compatible HART software and test communication with the connected instrument. Restart Windows if the installation instructions request it.

Keep the driver updated when Microflex provides a compatible update that addresses your needs. Review release notes before changing a working setup, and retain the previous installer in case you need to restore it. A driver update can address connection issues, but correct port selection and instrument wiring remain essential.