ZTE UI AT Interface (COM74) Driver

The ZTE UI AT Interface (COM74) driver enables Windows to communicate with the AT-command interface exposed by a compatible ZTE USB device. You may need it if your ZTE modem or mobile broadband device appears as an unknown device, shows a warning in Device Manager, or cannot be accessed by software that uses a serial connection.

Key Features

• AT-command communication: Allows compatible software to send commands to the ZTE device for functions such as checking connection status or retrieving device information.
• USB-to-serial interface support: Helps Windows recognize the device’s communication interface as a COM port. COM74 is the assigned port number, which can differ between computers or USB connections.
• Device identification: Provides the driver information Windows needs to associate the interface with the appropriate ZTE driver rather than leaving it unrecognized.
• Legacy Windows compatibility: Intended for Windows 10, 8.1, 7, Vista, and XP, subject to the selected package’s supported versions and system architecture.

How to Install ZTE UI AT Interface (COM74) Driver

1. Check the device and operating system. Open Device Manager and locate the ZTE interface, usually under Ports (COM & LPT) or Other devices. Confirm your Windows version and whether it is 32-bit or 64-bit.
2. Choose a matching package. Before starting your ZTE UI AT Interface (COM74) driver download for Windows, compare the package’s compatibility details with your device’s hardware IDs. Look for the latest version that explicitly supports your configuration.
3. Download and extract the files. Choose a trusted source for a free download, scan the package, and extract it if necessary. Avoid installers that require unrelated software.
4. Install the driver. Run the supplied setup program, if available. Alternatively, right-click the interface in Device Manager, select Update driver, and browse to the extracted driver folder. Follow the prompts and restart if requested.
5. Verify recognition. Reconnect the device and check that the interface appears without a warning icon. Select its current COM port in any software that requires a serial connection.

Keep the driver updated when a compatible update addresses connection problems or improves support for your device. For Windows 10/11 systems, check compatibility carefully: Windows 10 is listed here, but Windows 11 support is not confirmed. Keep a copy of your working driver so you can roll back if a newer package causes problems.