The VGA port was commonly found on Windows PCs, and the same socket was used with all the VGA variations.

The most common type of port was a VGA output, which allowed you to connect your analog computer monitor to other monitors or televisions.

Resolutions Supported by VGA

The VGA can be used with a variety of supported VGA resolutions, ranging from 320×400px @70 Hz, or 320×480px @60 Hz (12.6 MHz of signal bandwidth) to 1280×1024px (SXGA) @85 Hz (160 MHz) and up to 2048×1536px (QXGA) @85 Hz (388 MHz).

• All VGA connectors carry analog RGBHV (red, green, blue, horizontal sync, vertical sync) video signals. Modern connectors also include VESA DDC pins, for identifying attached display devices.
• In both its modern and original variants, VGA utilizes multiple scan rates, so attached devices such as monitors are multisync by necessity.

About VGA Functionality

The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, as well as many monitors, projectors and high-definition television sets. Devices continue to be manufactured with VGA connectors, although newer digital interfaces such as DVI, HDMI and DisplayPort are increasingly displacing VGA, and many modern computers do not include it.

• There are no standards defining the quality required for each resolution, but higher-quality cables typically contain coaxial wiring and insulation that make them thicker.
• While shorter VGA cables are less likely to introduce significant signal degradation, good-quality cable should not suffer from signal crosstalk even at greater lengths.
• It is not uncommon to still find the VGA cable and connector with today's computers, monitors, projectors, and TVs. However this type of connector is becoming obsolete.
• The VGA interface includes no affordances for hot swapping, the ability to connect or disconnect the output device during operation, usually does not cause damage to the hardware or other problems.