Communications Port (COM55) Driver

The Communications Port (COM55) driver enables Windows applications to communicate through the serial port assigned the COM55 identifier. It is useful if you need to connect serial equipment, troubleshoot an unrecognized port, or restore communication after reinstalling Windows. This Microsoft-listed entry appears in the USB category, but COM55 is a port assignment—not a unique hardware model—so the correct driver depends on the underlying controller or USB-to-serial adapter.

Key Features

• Enables serial communication: Lets compatible software exchange data with equipment connected through the COM55 port.
• Supports port configuration: Provides access to settings such as baud rate, parity, and flow control when supported by the hardware.
• Integrates with Device Manager: Makes it easier to check device status, identify driver problems, and manage the assigned COM port.
• Covers listed Windows systems: This entry lists Windows 10, 8.1, 7, Vista, and XP; individual driver packages may support only some of these versions.

How to Install Communications Port (COM55) Driver

1. Identify the hardware. Open Device Manager and locate Communications Port (COM55), usually under Ports (COM & LPT). Open Properties > Details > Hardware Ids to identify the controller or adapter.
2. Check compatibility. Before choosing a Communications Port (COM55) driver download for Windows, confirm that the package matches your hardware, Windows release, and 32-bit or 64-bit system. For Windows 10/11 systems, verify support separately: Windows 11 is not included in this entry’s listed operating systems.
3. Choose a trusted source. Try Windows Update or the hardware manufacturer’s support page for a free download. Select the latest version compatible with your device rather than assuming any newer serial-port driver will work.
4. Install the driver. Run the supplied installer, or select Update driver in Device Manager and browse to the extracted driver folder. Follow the prompts and restart if requested.
5. Test the connection. Reconnect your equipment, confirm that the port has no warning icon, and select COM55 in your application. Ensure its communication settings match those required by the connected device.

Keep the driver updated when a compatible update addresses connection issues, improves stability, or supports a system change. If the port already works reliably, avoid replacing its driver solely because a higher version number is available.