Editing VESA BIOS Extensions (section)

===Supplemental specifications===
Supplemental specifications provides device independent interface between application software and Super VGA hardware.  Function numbers are assigned by VESA Software Standards Committee (SSC).

====Power management extensions (PM)====
{{further|VESA Display Power Management Signaling}}
DPMS is a hardware standard that allows graphics cards to communicate with DPMS-compliant [[Computer display|monitor]]s via a special signalling system that can be used with existing graphics controllers and monitor cables. This signalling system allows the graphics card to tell the monitor to go into a number of different power management or power saving states, which effectively allow the monitor to turn itself off when it is not in use.

====Flat panel interface extensions (FP)====
Allows access to special features in flat panel controllers.

====Audio interface extensions (AI)====
Provides standard to audio services.

Currently (version 1.00), the VBE/AI specification defines three device classes: WAVE, MIDI, and VOLUME. Device types not covered:

; CDROM control: which is covered by the [[Microsoft CD-ROM Extensions|Microsoft's CD-ROM Extensions]].
; Effects processors: This class of device will be expanded in future version of the VBE/AI specification.

====OEM extensions====
Provides standard entry to vendor-specific extensions.

====Display Data Channel (DDC)====
{{Main article|Display Data Channel}}
The '''Display Data Channel''' or '''DDC''' is a digital connection between a [[computer display]] and a [[graphics card|graphics adapter]] that allows the display to communicate its specifications to the adapter. The standard was created by [[VESA]].

====Serial Control Interface (SCI)====
Provides hardware independent means for operating system and application to read and write data over [[I²C]] serial control interface.