Editing Digital Visual Interface (section)

===DDC===
Like modern analog [[VGA connector]]s, the DVI connector includes pins for the [[display data channel]] (DDC), which allows the graphics adapter to read the monitor's [[extended display identification data]] (EDID). When a source and display using the DDC2 revision are connected, the source first queries the display's capabilities by reading the monitor EDID block over an [[Inter-Integrated Circuit|I²C]] link. The EDID block contains the display's identification, color characteristics (such as gamma value), and table of supported video modes. The table can designate a preferred mode or [[native resolution]]. Each mode is a set of timing values that define the duration and frequency of the horizontal/vertical sync, the positioning of the active display area, the horizontal resolution, vertical resolution, and refresh rate.