ZTE UI AT Interface (COM3) Driver

The ZTE UI AT Interface (COM3) driver helps Windows recognize the AT-command interface exposed by a compatible ZTE USB device, allowing supported software to communicate with it through a serial port. You may need it if Device Manager shows an unknown device, the interface has a warning icon, or your modem-management software cannot detect the connection.

Key Features

• Enables serial communication: Provides access to the device’s AT-command interface for compatible configuration, diagnostic, or connection-management tools.
• Supports USB device recognition: Helps Windows identify the ZTE interface correctly instead of leaving it listed as an unrecognized USB component.
• Works with supported Windows releases: Intended for Windows 10, 8.1, 7, Vista, and XP when the package matches your device and system architecture.
• Makes the interface available as a COM port: Allows applications to select the assigned serial port. Although the device name includes COM3, Windows may assign a different number.

How to Install ZTE UI AT Interface (COM3) Driver

1. Check your system and device. Confirm your Windows version and whether it is 32-bit or 64-bit. In Device Manager, check the interface’s hardware IDs if you need to distinguish between similar ZTE driver packages.

1. Choose a matching package. Before starting your ZTE UI AT Interface (COM3) driver download for Windows, verify the supported hardware and operating systems. Look for the latest version compatible with your device, rather than assuming the newest package fits every model. For Windows 10/11 searches, note that Windows 11 compatibility is not confirmed by the listed support information.

1. Download and extract the files. Use a trusted source for a free download, scan the package, and extract it if necessary. Avoid installers that require unrelated software.

1. Install the driver. Run the included setup utility, if provided. Alternatively, open Device Manager, right-click the affected interface, select Update driver, and browse to the extracted driver folder.

1. Verify the connection. Restart Windows if prompted, reconnect the device, and check Device Manager for warning icons. Select the displayed COM port in your compatible application.

Keep the driver updated when a compatible release addresses connection problems or supports changes to your system. Before an update, retain the working installer or create a restore point so you can recover if the replacement causes issues.