SAMSUNG Mobile USB Serial Port (COM33) Driver

The SAMSUNG Mobile USB Serial Port (COM33) driver allows Windows to communicate with a compatible Samsung mobile device through a USB serial connection. It is useful when supported connection, diagnostic, or service software needs access to the device’s serial interface, or when Device Manager shows a missing driver for that interface. COM33 is the port number assigned by Windows, not a separate Samsung device model.

Key Features

• Provides USB serial communication between a compatible Samsung device and Windows applications that use COM ports.
• Helps Windows recognize the mobile serial interface and display it under Ports (COM & LPT) in Device Manager.
• Enables compatible utilities to access the assigned serial port when the connected device exposes that interface.
• Supports installation on Windows 10, 8.1, 7, Vista, and XP when the selected driver package matches the device, operating system, and system architecture.

How to Install SAMSUNG Mobile USB Serial Port (COM33) Driver

1. Check your Windows version and whether it is 32-bit or 64-bit. Before choosing a SAMSUNG Mobile USB Serial Port (COM33) driver download for Windows, confirm that the package supports your Samsung device and operating system. For Windows 10/11 systems, verify compatibility separately: Windows 11 is not included in the supported OS list provided here.
2. Obtain a compatible driver package from a trusted source, preferably Samsung’s official support resources. If choosing a free download, check its source and digital signature rather than relying on the download label alone.
3. Extract the package if necessary. Run the supplied installer and follow its instructions to install the driver. If the package contains only driver files, open Device Manager, right-click the affected device, select Update driver, and browse to the extracted folder.
4. Connect the Samsung device using a data-capable USB cable, following any connection instructions supplied with the package. Restart Windows if prompted.
5. Open Device Manager and confirm that the serial interface appears without a warning icon. If your application requires a COM port, select the number Windows actually assigned; it may differ from COM33.

Keep the driver updated when Samsung provides a compatible release that addresses connection issues or improves support. The latest version is not necessarily suitable for older Windows releases, so check compatibility before each update. If a new driver causes problems, use Device Manager’s rollback option when available.