DVI and VGA Video Cables
The HDMI and DisplayPort video interfaces only support digital flat-panel displays.
Older video interfaces were used when computer monitors and projectors were predominantly of the cathode ray tube (CRT) type, driven by an analog signal.
Digital Visual Interface
Digital Visual Interface (DVI) is designed to support both analog and digital outputs.
- no longer in active development
- five types of DVI, supporting different configurations for single and dual link (extra bandwidth) and analog/digital output signaling
- pin configuration of the connectors identifies what type of DVI is supported by a particular port
- DVI-I supports both analog equipment and digital outputs
- DVI-A supports only analog output
- DVI-D supports only digital
Video Graphics Array (VGA) Interface
The 15-pin Video Graphics Array (VGA) port was the standard analog video interface for PC devices for a very long time.
- until recently, most video cards and monitors included a VGA port
- will usually support resolutions up to full HD (1920x1080), depending on cable quality
- connector is a D-shell type with screws to secure it to the port
