ZTE MF667 AT Port (COM4) Driver

The ZTE MF667 AT Port (COM4) driver helps Windows recognize the AT-command interface of the ZTE MF667 USB modem, allowing compatible software to communicate with it through a serial port. You may need this driver if the modem’s AT port appears as an unknown device, shows a warning in Device Manager, or cannot be accessed by your connection-management software.

Key Features

• AT-command communication: Provides access to the modem’s command interface so compatible applications can query device information and manage supported modem functions.
• USB-to-serial interface support: Enables Windows to expose the modem’s AT port as a COM port. Although this device is labeled COM4, Windows may assign a different port number on your computer.
• Device recognition: Helps Windows identify the AT-port component correctly when the appropriate ZTE driver package is installed.
• Legacy Windows compatibility: Intended for Windows 10, 8.1, 7, Vista, and XP, subject to the compatibility requirements of the individual driver package. This AT-port driver is one component of modem support, not a guarantee of mobile internet connectivity.

How to Install ZTE MF667 AT Port (COM4) Driver

1. Check your system. Confirm your Windows version and whether it uses a 32-bit or 64-bit architecture. For Windows 10/11 systems, note that Windows 10 is listed as supported here; Windows 11 compatibility should be verified separately.
2. Choose a compatible package. Before starting your ZTE MF667 AT Port (COM4) driver download for Windows, check that the package explicitly supports your modem and operating system. Use a trusted source for any free download, and select the latest version compatible with your setup.
3. Prepare the files. Extract the downloaded archive if necessary. If it includes a setup utility, follow its instructions, including any guidance on when to connect the modem.
4. Install the driver. Run the supplied installer, or open Device Manager, locate the modem’s AT port or unidentified device, and choose the option to update its driver. Browse to the extracted driver folder and follow the prompts.
5. Verify detection. Restart Windows if requested, then check Device Manager for the port without a warning icon. If the assigned COM number differs from COM4, select that number in your modem software.

Keep the driver updated when a compatible release addresses a connection or recognition issue. Before you update a working installation, review compatibility details and retain the previous installer in case you need to roll back.