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The Dynabook Satellite C655D-S5540 Synaptics Touchpad Driver is an updated version of the software designed for Windows 7 64-bit operating systems. It is used for managing the Synaptics touchpad on the Dynabook laptop, providing users with added features and performance.

List of Features

The Synaptics Touchpad Driver adds several new features to the Dynabook Satellite C655D-S5540 including:
  • Improved scrolling accuracy and speed
  • New gesture recognition technology for advanced touchpad controls
  • Enhanced palm detection capabilities to avoid accidental cursor movement
  • Integration with the Dynabook control panel software, allowing for greater customization of touchpad settings
  • Multi-touch and multi-finger support for easier navigation and improved productivity


The software is compatible with the Dynabook Satellite C655D-S5540 laptop and requires a Windows 7 64-bit operating system. It was developed and released by the Synaptics corporation.

Known Issues and Troubleshooting

Some known issues with the Synaptics Touchpad Driver include occasional scrolling lag or inaccurate touchpad sensitivity. If users experience these issues, they should consider adjusting touchpad settings in the Dynabook control panel or ensuring they are using the correct driver version. If troubleshooting these methods fails, the touchpad may need to be physically inspected or replaced.

The Driver

The Synaptics Touchpad Driver is a software package that enables communication between the touchpad hardware and the operating system. It is responsible for translating touchpad inputs into commands that the computer and its applications can respond to. Keeping drivers up to date is important for both optimizing device performance and reducing system errors.


The Dynabook Satellite C655D-S5540 Synaptics Touchpad Driver is a useful utility for users of this Dynabook laptop model. Its advanced features and improved performance make it an essential software for those who use a touchpad on a daily basis. While troubleshooting may be necessary in rare cases, the driver updates and support from both Dynabook and Synaptics offer users excellent resources for ensuring their devices are optimized and running smoothly.