Short for Video Graphics Array, VGA is a popular display standard developed by IBM and introduced in 1987. VGA provides 640 x 480 resolution color display screens with a refresh rate of 60Hz and 16 colors displayed at a time. If the resolution is lowered to 320 x 200, 256 colors are shown.

VGA cable and connector

In the above picture is an example of what the VGA (SVGA) cable and connector will typically look like on the monitor and on the back of the computer. The VGA standard has been replaced by SVGA and although these cables and connectors are still referred to as VGA they are technically SVGA.

Although it is not uncommon to still find this type of cable and connector with today's computers and monitors. This standard is becoming obsolete and being replaced by the DVI connector and cable.

15-pin VGA pin diagramVGA Pin functions

The illustration shows the 15-Pin VGA connector, its pin assignments, and size dimensions. As can be seen, the VGA connector has 15 holes and each hole (pin) has its own function as explained in the below chart, which describes each pin function.

Pin Function
1 Red Video
2 Green Video
3 Blue Video
4 Monitor ID 2
5 TTL Ground (monitor self-test)
6 Red Analog Ground
7 Green Analog Ground
8 Blue Analog Ground
9 Key (Plugged Hole)
10 Sync Ground
11 Monitor ID 0
12 Monitor ID 1
13 Horizontal Sync
14 Vertical Sync
15 Monitor ID 3

Related pages

Also see: Cable, Connection, SVGA, VGA Mode, Video card, Video converter, Video terms