ZTE AT Port (COM4) Driver

The ZTE AT Port (COM4) driver lets 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 this driver if Device Manager shows an unrecognized ZTE interface, the port is missing, or your modem-management software cannot connect.

Key Features

• AT-command communication: Provides access to the device’s command interface for compatible configuration, diagnostic, or modem-management tools.
• USB-to-serial interface support: Helps Windows identify the ZTE AT port and make it available to applications that use COM ports.
• Legacy Windows compatibility: Intended for supported configurations running Windows 10, 8.1, 7, Vista, or XP; individual driver packages may support only some of these systems.
• Port identification: Allows you to locate the interface in Device Manager and check its assigned COM number. Although the device name includes COM4, Windows may assign a different number.

How to Install ZTE AT Port (COM4) Driver

1. Check your system and device. Confirm your Windows version and whether it is 32-bit or 64-bit. If possible, check the device’s hardware IDs in Device Manager to help select a matching package.
2. Choose a compatible package. Before starting your ZTE AT Port (COM4) driver download for Windows, review the listed operating systems and supported hardware. For Windows 10/11 systems, do not assume compatibility is identical: Windows 11 support is not confirmed by the supplied compatibility list.
3. Download and extract the files. Choose a trusted source when looking for a free download. Select the latest version that explicitly supports your device and operating system, then extract the archive if necessary.
4. Install the driver. Run the supplied installer and follow its instructions. If there is no installer, open Device Manager, right-click the relevant ZTE or unknown device, choose Update driver, and browse to the extracted driver folder.
5. Reconnect and verify. Restart Windows if prompted, reconnect the device, and check Device Manager for the ZTE AT port without a warning icon. Select its assigned COM number in your compatible software.

Keep the driver updated when a compatible release addresses connection problems or improves support for your system. Before you update a working installation, verify the package details and retain the previous driver so you can roll back if needed.