ZTE Diagnostics Device (COM15) Driver

The ZTE Diagnostics Device (COM15) driver helps Windows recognize the diagnostic USB interface exposed by a compatible ZTE device and make it available to supported service software. You may need it if your connected device appears with a warning in Device Manager or if a diagnostic application cannot access its assigned COM port.

Key Features

• USB diagnostic interface support: Enables communication between Windows and the diagnostic interface on compatible ZTE hardware.
• COM port access: Makes the interface available through a serial port that compatible diagnostic tools can use. COM15 is the assigned port number, not a separate hardware model, and may differ between computers.
• Device recognition: Helps resolve detection problems caused by a missing or incorrectly installed driver, provided the package matches the device’s hardware ID.
• Legacy Windows support: Intended for use with matching driver packages for Windows 10, 8.1, 7, Vista, and XP. Check each package’s supported systems and architecture before installation.

How to Install ZTE Diagnostics Device (COM15) Driver

1. Identify the device and Windows version. Open Device Manager, locate the ZTE diagnostic interface, and check Properties > Details > Hardware Ids. Confirm whether your Windows installation is 32-bit or 64-bit.
2. Choose a compatible package. Before starting your ZTE Diagnostics Device (COM15) driver download for Windows, verify that the package supports your hardware ID and operating system. Choose a trusted source offering a free download, and check whether the latest version still supports older systems. For Windows 10/11 users, note that Windows 11 is not listed among this device’s supported operating systems.
3. Extract and install the driver. If the package includes an installer, follow its prompts. Otherwise, extract the files, right-click the device in Device Manager, select the option to update its driver, and browse to the extracted folder. Wording varies by Windows version.
4. Reconnect and verify detection. Restart if prompted, reconnect the ZTE device, and confirm that the diagnostic interface appears without a warning icon.
5. Check the application’s port setting. Select the COM port currently shown in Device Manager within your compatible diagnostic software; it may not always be COM15.

Keep the driver updated when a compatible release addresses connection or recognition issues. Before you update a working installation, review compatibility information and retain the previous package in case you need to roll back. A newer driver is useful only if it supports your specific ZTE hardware and Windows version.