Lab126 HS-USB Diagnostics 0800 (COM39) Driver

The Lab126 HS-USB Diagnostics 0800 (COM39) driver allows Windows to recognize the device’s USB diagnostic interface and make it available to compatible service software through a serial COM port. This Qualcomm Atheros driver is intended for users or technicians who need diagnostic communication with a connected device, particularly when Device Manager shows an unrecognized interface or a driver warning.

Key Features

• USB diagnostic interface support: Enables compatible diagnostic tools to communicate with the device when it exposes its HS-USB Diagnostics interface.
• COM-port access: Makes the diagnostic connection available as a Windows serial port. Although this device is listed as COM39, Windows may assign a different port number on another computer.
• Legacy Windows compatibility: Listed operating systems include Windows 10, Windows 8.1, Windows 7, Windows Vista, and Windows XP. Check the individual package for supported versions and 32-bit or 64-bit requirements.
• Device recognition: Installing the correct package can resolve missing-driver warnings caused by an absent or incompatible driver. It does not replace the diagnostic application required to use the interface.

How to Install Lab126 HS-USB Diagnostics 0800 (COM39) Driver

1. Check the device and system details. Open Device Manager, locate the diagnostic interface, and inspect its hardware IDs under Properties > Details. Confirm your Windows version and system architecture before selecting a package.
2. Choose a matching package. For a Lab126 HS-USB Diagnostics 0800 (COM39) driver download for Windows, verify that the package supports your hardware IDs and operating system. Choose a trusted source offering a free download, and review any available publisher or digital-signature information.
3. Extract and install the driver. If the package includes an installer, follow its instructions. Otherwise, extract the files, right-click the device in Device Manager, select Update driver, and browse to the extracted folder.
4. Reconnect and verify. Restart Windows if prompted, then reconnect the device. Confirm that the diagnostic interface appears without a warning icon and note its assigned COM port.
5. Configure your diagnostic tool. Select the matching port in compatible service software. For Windows 10/11 systems, remember that Windows 10 is listed as supported, but Windows 11 compatibility must be confirmed separately.

Keep the driver updated when a compatible release addresses a problem or improves support for your setup. Before you update, check that the latest version still supports your device and Windows edition; a newer package is not automatically the right match.