Which type of monitor specification could impact the system's overall resolution in a digital visual system?

The native resolution of the original monitor is a critical specification that directly influences the overall resolution of a digital visual system. Native resolution refers to the fixed number of pixels that a display can physically support and is often the highest quality resolution that the monitor can display.

When the source signal resolution is set to match the native resolution of the monitor, the image output will appear clear and sharp, utilizing the maximum capability of the display. If the system attempts to display content at a resolution higher than the monitor's native resolution, the picture may be scaled down, resulting in a loss of detail and clarity. Conversely, attempting to display at a lower resolution can lead to distortion as the system stretches the image to fill the screen.

In contrast, the other options do not have an impact on the actual display resolution. The model of the keyboard used is irrelevant to image output, as it does not affect video processing or display quality. The type of cables may influence signal quality or bandwidth, but they do not define the display's resolution limitation. Lastly, the power consumption rating indicates energy usage rather than image clarity or resolution capacity. Thus, understanding the importance of native resolution is essential for ensuring optimal performance in visual systems.