ZTE Mobile Broadband AT Port (COM28) Driver

The ZTE Mobile Broadband AT Port (COM28) driver lets Windows communicate with the AT-command interface of a compatible ZTE mobile broadband device connected over USB. It is intended for users whose modem shows an unrecognized AT port in Device Manager or whose connection software cannot access the device’s control interface.

Key Features

• Enables compatible software to send AT commands for modem identification, status checks, and supported connection-management tasks.
• Provides the serial-port interface shown as COM28 in Device Manager. The assigned COM number can vary between computers or USB connections.
• Helps Windows recognize the AT-command port as part of a ZTE USB modem’s interfaces; separate drivers may be needed for its network or diagnostic functions.
• Supports installation on Windows 10, 8.1, 7, Vista, and XP when the selected driver package matches the device and operating system.

How to Install ZTE Mobile Broadband AT Port (COM28) Driver

1. Identify your hardware and Windows version. In Device Manager, open the device’s Properties and check Details > Hardware Ids. Confirm whether Windows is 32-bit or 64-bit before choosing a package.
2. Select a compatible package. Before starting your ZTE Mobile Broadband AT Port (COM28) driver download for Windows, check its listed hardware and OS support. Choose the latest version that explicitly supports your setup, rather than assuming the newest package fits every ZTE modem.
3. Download and extract the files. Use a trusted source for a free download, and avoid packages that require unrelated software. If you are comparing Windows 10/11 options, note that Windows 11 compatibility is not confirmed by the supported OS list here.
4. Install the driver. Run the included installer, if available. Otherwise, right-click the device in Device Manager, select Update driver or the equivalent option for your Windows version, and browse to the extracted driver folder.
5. Verify the result. Restart Windows if prompted, reconnect the modem, and check that its AT port appears without a warning icon. If your application requires a specific port, select the COM number currently assigned in Device Manager.

Keep the driver updated when a compatible release addresses recognition issues or improves reliability. Before you update a working installation, retain the previous package or create a restore point so you can recover if the replacement causes problems.