Serial COM Device (COM4) Driver

The Serial COM Device (COM4) driver allows Windows to communicate with a USB-connected serial device assigned to the COM4 port. You may need it if your serial equipment is not recognized, appears with a warning in Device Manager, or cannot connect to software that uses a COM port. Listed under the vendor name Serial Com Device, this USB-category entry supports Windows 10, 8.1, 7, Vista, and XP; confirm that the download matches your hardware before installing.

Key Features

• Enables serial communication: Helps compatible applications exchange data with connected serial equipment through a Windows COM port.
• Supports device recognition: Provides the driver components Windows needs to identify and use the matching USB serial interface.
• Works with COM-port applications: Allows compatible terminal, configuration, and diagnostic tools to access the device when the correct port settings are selected.
• Offers legacy Windows compatibility: Covers the listed Windows versions, subject to the individual driver package’s hardware and system requirements.

How to Install Serial COM Device (COM4) Driver

1. Identify your hardware. Open Device Manager, locate the device under Ports (COM & LPT) or Other devices, and check Properties > Details > Hardware Ids. COM4 is a port assignment, not a unique hardware model.
2. Check the package requirements. Before choosing a Serial COM Device (COM4) driver download for Windows, verify the supported hardware IDs, Windows version, and 32-bit or 64-bit architecture. For Windows 10/11 systems, note that Windows 11 support is not confirmed by this listing.
3. Download the matching package. Choose a trusted source and check whether the free download is the latest version compatible with your device and operating system. Extract the archive if necessary.
4. Install the driver. Run the included installer, or select Update driver in Device Manager and browse to the extracted driver folder. Follow the prompts and restart if requested.
5. Verify the connection. Confirm that the device appears without a warning icon, then select its assigned COM port in your application. If Windows assigns a port other than COM4, use that port or adjust the assignment where supported.

Keep your driver updated when a compatible update addresses connection problems or improves system compatibility. Check the release notes before replacing a working driver, and avoid installing a package solely because its device name matches—hardware compatibility matters more than the COM-port number.