Qualcomm HS-USB AT Port (COM5) Driver

The Qualcomm HS-USB AT Port (COM5) driver allows Windows to communicate with the AT-command interface on a compatible Qualcomm-based USB device. Listed under Qualcomm Atheros in the USB category, this port is typically used by modem utilities, connection software, or diagnostic tools that need serial access to a connected device. You may need the driver if the port appears as an unknown device, shows a warning in Device Manager, or cannot be accessed by your software.

Key Features

• Enables serial communication over USB so compatible applications can send AT commands to the connected device.
• Helps Windows identify the AT-command port and expose it as a COM port in Device Manager.
• Supports device configuration and status queries through appropriate modem or service utilities, depending on the connected hardware.
• Provides a driver option for Windows 10, 8.1, 7, Vista, and XP when the package matches your device and operating system architecture.

How to Install Qualcomm HS-USB AT Port (COM5) Driver

1. Check your device and Windows version. Open Device Manager, locate the connected USB device or unidentified port, and review its hardware IDs under Properties > Details. Confirm whether your Windows installation is 32-bit or 64-bit.
2. Choose a compatible package. Before starting your Qualcomm HS-USB AT Port (COM5) driver download for Windows, confirm that the package supports your hardware IDs and OS. Select the latest version approved for your device, not simply the newest available file. If offered as a free download, it should not require unrelated software.
3. Extract and install the driver. If the package includes an installer, follow its instructions. Otherwise, right-click the device in Device Manager, choose Update driver, and browse to the extracted driver folder.
4. Reconnect and verify. Restart Windows if prompted, reconnect the device, and check Ports (COM & LPT) in Device Manager. Confirm that the port appears without a warning icon. Windows may assign a number other than COM5.
5. Check application settings. Select the assigned COM port in your modem or diagnostic software. For Windows 10/11 systems, verify compatibility carefully: Windows 10 is listed here, but Windows 11 support is not confirmed.

Keep the driver updated when your device manufacturer provides a compatible release that addresses connection problems or software compatibility. Before an update, retain the working package or create a restore point so you can recover if the replacement causes issues.