A video card adapter is an expansion card where data such as graphical information could be extended to a monitor or projector or onto any other video display device, which allows one to view various kinds of information. This is basically what video cards are made for - to produce the output to one's display system.VDO. card or video card adapter is also known as a video adapter, or a video controller; video board or video accelerator, or graphics adapter and many others may claim different