Mobile Adapter - ETS PC UI Interface (COM3) Driver

The Mobile Adapter – ETS PC UI Interface (COM3) driver helps Windows recognize the Huawei USB interface and makes its serial communication port available to compatible software. You may need it if your Huawei device appears as an unknown device, shows a warning in Device Manager, or cannot communicate with a supported connection or management application.

Key Features

• USB interface recognition: Helps Windows identify the Huawei Mobile Adapter interface rather than leaving it listed as an unrecognized USB device.
• Serial-port access: Enables compatible applications to communicate through the device’s assigned COM port. Although the device name includes COM3, Windows may assign a different port number.
• Legacy Windows support: Intended for supported configurations of Windows 10, 8.1, 7, Vista, and XP; check the individual package for your OS version and architecture.
• Troubleshooting support: Installing the correct package can resolve recognition problems caused by missing or mismatched drivers, though cable, hardware, and application issues may require separate checks.

How to Install Mobile Adapter – ETS PC UI Interface (COM3) Driver

1. Check your system. Confirm your Windows version and whether it uses a 32-bit or 64-bit architecture. In Device Manager, inspect the interface’s hardware IDs if you need to verify the driver match.
2. Choose a compatible package. Before starting your Mobile Adapter – ETS PC UI Interface (COM3) driver download for Windows, check the supported systems and hardware IDs. For Windows 10/11 searches, note that Windows 11 support is not confirmed here.
3. Download and extract the files. Use a trusted source for a free download, and extract the archive if necessary. Avoid packages that require unrelated utilities or ask you to disable security protections.
4. Install the driver. Run the included installer, if provided. Alternatively, right-click the device in Device Manager, select Update driver, and browse to the extracted driver folder.
5. Verify the connection. Reconnect the Huawei device and restart Windows if prompted. Confirm that the interface appears without a warning icon, then select its assigned COM port in your compatible application.

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