What is VGA Cable and What is it for?

September 11, 2017

The VGA is the oldest among the connections present in the market. It is usually used to connect the computer to the monitor, but it can also connect to the PC and the TV or two other displays. Its main competitor is the HDMI cable. Its name comes from the English “Video Graphics Array”, which, in free translation, means video graphics standard.

Which connection to choose? HDMI, VGA, DVI or DisplayPort?

The analog cable was invented by IBM in 1987. The original model could reproduce 16-256 colors with a maximum resolution of 640 × 480 pixels, representing a breakthrough at the time. Over time, other versions were created and improved, but the terminology remained. This is due, in large part, to the connector, whose correct name is D-SUB or DB Connector. They can be found in several sizes, but the most commonly used is the 10-meter VGA.

Connectors

The connectors come in male and female versions and appear on both cables and video cards. The “males” have 15 pins, distributed in three rows of five, that fit into holes present in the plug “female.” In addition, they usually have two screws, one on each side, allowing a better fixation of these two parts.

VGA-2

VGA male connector (left) and female VGA port (right) (Photo: Reproduction / Wikipedia)
There is a wide variety of VGA cables available. Some more sophisticated models offer gold-plated plugs or shielding against interference. However, this does not amount to much difference in image quality. The main recommendation in the time of purchase is not in the production of material, but the length of the wire. The smaller the cable, the better, as there is less signal degradation.

Prices and Availability

Despite being out of line, it is easy to find VGA cables for sale. The basic models with DB connectors cost an average of R $ 10. In this group are included the male-male, female-female and male-female cables.

The USB-VGA models are a little more expensive, with prices around $ 50. There are also VGA-HDMI cables in the $ 30 range, but they do not work.

Remember that VGA is analog and HDMI is digital? For the signal to change, you need a converter. Fortunately, there are cable models with converters, but there they cost about $ 80. Cheaper versions will connect to devices, but will not perform signal conversion.

Source: https://br.pc-drive.com

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