Without the means or right of communicating with others: a prisoner held incommunicado; incommunicado political detainees. or adv , adj deprived... Incommunicado - definition of incommunicado by The Free Dictionary
The 15 pin the same vga cable can be used with a variety of supported resolutions, ranging from 640350px @70 hz (24 mhz signal bandwidth) to maximum resolution modern port is 2048 by 1536 pixels at 85 hertz as 2013.
For example if you are recording at 640x480(VGA resolution) you have 640 horizontal lines of pixels by multiplying to 75 you get 480 meaning that to get the best detail possible at VGA resolution, you need a camera that captures 480TV Lines or better.