SAMSUNG Mobile USB Serial Port (COM77) Driver

The SAMSUNG Mobile USB Serial Port (COM77) driver allows Windows to communicate with a compatible Samsung mobile device through its USB serial interface. It is useful when Samsung connection software or a service utility needs a COM port and your device appears with a missing-driver warning or cannot establish a serial connection.

Key Features

• Enables USB serial communication between a compatible Samsung device and Windows applications that use a COM port.
• Helps Windows identify the mobile serial interface correctly in Device Manager.
• Supports connection-dependent tasks in compatible Samsung utilities, provided the device exposes the required serial interface.
• Provides a driver option for supported Windows 10, 8.1, 7, Vista, and XP systems; check the individual package for your Windows version and 32-bit or 64-bit architecture.

How to Install SAMSUNG Mobile USB Serial Port (COM77) Driver

1. Check your system details in Windows Settings or Control Panel. Before choosing a SAMSUNG Mobile USB Serial Port (COM77) driver download for Windows, confirm that the package supports your operating system, architecture, and Samsung device.
2. Obtain the driver from a trusted source, preferably Samsung’s official support resources. When selecting a free download, verify its publisher and compatibility rather than relying only on the filename.
3. Disconnect the mobile device if the installer instructs you to do so. Extract the downloaded archive if necessary, then run the setup program to install the driver. If the package contains only driver files, use Device Manager’s “Update driver” option and browse to the extracted folder.
4. Reconnect your Samsung device using a data-capable USB cable and allow Windows to finish detecting it. Restart the computer if prompted.
5. Open Device Manager and check “Ports (COM & LPT)” for the Samsung serial interface without a warning symbol. Windows may assign a number other than COM77; select the actual assigned port in your connection software.

Keep the driver updated when Samsung provides a compatible release or an update addresses a connection problem. Choose the latest version that explicitly supports your device and operating system, not simply the newest package available. For Windows 10/11 searches, note that Windows 10 is listed as supported here, while Windows 11 compatibility is not confirmed.