A VGA (Video Graphics Array) cable is an analog cable that transmits a video signal from a source like a computer to a display device such as a monitor or projector. It is a common, though somewhat outdated, connection type that uses a familiar 15-pin connector to carry separate signals for red, green, and blue color data, along with horizontal and vertical sync pulses to maintain the image. While newer digital standards like HDMI offer higher resolutions, VGA is still widely used in many environments due to its reliability, durability, and compatibility with older hardware.