HUAWEI Mobile Connect - 3G PC UI Interface (COM12) Driver

The HUAWEI Mobile Connect – 3G PC UI Interface (COM12) driver enables Windows to recognize the PC UI serial interface exposed by compatible Huawei mobile broadband hardware. It helps Huawei connection software communicate with the device and is useful when setting up a modem, reinstalling Windows, or troubleshooting an unrecognized interface in Device Manager.

Key Features

• PC UI interface support: Provides the driver needed for compatible software to access the Huawei device’s control and management interface.
• Serial-port recognition: Allows Windows to identify the interface as a COM port. COM12 is the assigned port number on this system; the number may differ on another computer.
• Legacy Windows compatibility: Intended for supported configurations running Windows 10, Windows 8.1, Windows 7, Windows Vista, or Windows XP, depending on the driver package.
• Device setup assistance: Can help resolve missing-driver warnings for this interface when the package matches your hardware. Separate drivers may be required for other modem functions.

How to Install HUAWEI Mobile Connect – 3G PC UI Interface (COM12) Driver

1. Identify your device and system. Open Device Manager and locate the Huawei interface, which may appear under Ports (COM & LPT) or Other devices. Check its hardware IDs and confirm your Windows version and whether it is 32-bit or 64-bit.
2. Choose a matching package. Before starting a HUAWEI Mobile Connect – 3G PC UI Interface (COM12) driver download for Windows, verify the supported hardware and operating systems. Select the latest version compatible with your device, not simply the newest package available. For Windows 10/11 systems, note that Windows 11 compatibility is not confirmed by the supported OS list here.
3. Download and extract the files. Use a trusted source, preferably Huawei or your hardware provider. If choosing a free download, verify its origin and avoid unrelated installers or bundled utilities.
4. Install the driver. Run the supplied setup program, if included. Otherwise, right-click the interface in Device Manager, select Update driver, and browse to the extracted driver folder.
5. Confirm recognition. Restart if prompted, reconnect the device, and check that the interface appears without a warning icon. Ensure your connection software uses the assigned COM port.

Keep the driver updated when a compatible release addresses a problem or supports a system change. Before an update, retain a working driver copy or create a restore point so you can revert if necessary.