Qualcomm HS-USB NMEA 9027 (COM4) Driver

The Qualcomm HS-USB NMEA 9027 (COM4) driver enables Windows to communicate with the NMEA serial interface exposed by compatible Qualcomm-based USB hardware. Listed under Qualcomm Atheros in the USB category, this interface typically carries GPS/GNSS positioning messages for navigation or location-aware applications. You may need this driver if the device appears with a warning in Device Manager or your software cannot access its positioning data.

Key Features

• USB-to-serial communication: Provides access to the device’s NMEA interface through a Windows COM port, allowing compatible applications to read positioning messages.
• Device recognition: Helps Windows identify the interface correctly rather than leaving it listed as an unknown or unsupported device.
• Legacy Windows support: Intended for compatible installations of Windows 10, 8.1, 7, Vista, and XP, subject to the individual driver package’s requirements.
• Application connectivity: Lets navigation and diagnostic tools select the assigned serial port. COM4 is the current designation; Windows may assign another port after reconnection or installation.

How to Install Qualcomm HS-USB NMEA 9027 (COM4) Driver

1. Check the device identity. Open Device Manager and locate the NMEA interface under Ports (COM & LPT) or Other devices. Review its hardware IDs in Properties to confirm that the package matches your hardware.
2. Choose a compatible package. Before starting a Qualcomm HS-USB NMEA 9027 (COM4) driver download for Windows, check your Windows version and whether it is 32-bit or 64-bit. For Windows 10/11 systems, note that Windows 10 is listed as supported here, but Windows 11 compatibility is not confirmed.
3. Download and extract the files. Use a trusted manufacturer or device-vendor source, and select a free download only after verifying its origin and compatibility. Extract compressed files to an accessible folder.
4. Install the driver. Run the supplied installer, if included. Alternatively, right-click the device in Device Manager, select Update driver, and browse to the extracted driver folder. Follow the prompts without bypassing driver-signature warnings.
5. Verify the connection. Restart if prompted, then confirm that Device Manager shows no warning icon. Select the assigned COM port in your application; positioning output also depends on the hardware’s GNSS support and configuration.

Keep the driver updated when the device manufacturer provides a compatible release that addresses your needs. The latest version is not necessarily suitable for every older Windows installation, so check compatibility before an update and retain a working package in case you need to roll back.