VGA to DVI Adapter

In the past decade, LCD has slowly taken over from CRT as the dominant technology for both televisions and computer monitors. This long transition period has resulted in some unusual adapters appearing on the market, such as the VGA to DVI adapter. This is used to convert the VGA socket on a computer to a DVI socket that will accept the plug from an LCD monitor. However, it only works for certain types of DVI plug that accept a VGA signal. The technology at either end may be complex but the adapter itself is a very simple device. It consists of two ports joined together inside a plastic case, although some models have a short cable between the ports. The adapter usually sells for less than twenty dollars and can be bought at most computer stores.

With a VGA to DVI adapter, it is no longer necessary to keep bulky and heavy CRT monitors lying around the home or office. The adapter can be used to connect an old computer with a VGA graphics card to a new LCD monitor. It can also be used to connect two LCD monitors to a graphics card that has one DVI socket and one VGA socket. This configuration was common on many older cards, but most new cards sold today have two DVI sockets. If performance is not important, a basic video card can be bought today for slightly more than the cost of an adapter. Of course, if the card needs to be installed by a technician, an adapter would be a cheaper option.

When shopping for a VGA to DVI adapter, make sure to check that the ports have the right gender. There is another type of adapter currently available that looks almost identical to it, making it is very easy to pick up the wrong one by mistake. The other type is the DVI to VGA adapter, which is used to connect the DVI socket on a computer to the VGA plug from a CRT monitor. It has a male DVI plug and a female VGA socket, which is the opposite of a VGA to DVI adapter. Buying the wrong type is not a huge problem though, as small converters are also available that can change the gender of a port.

At first glance, DVI sockets may appear to be all the same, but a closer inspection reveals that some have fewer pins that others. As mentioned before, the VGA to DVI adapter only works for certain types of DVI socket. Specifically, these are the DVI-A and DVI-I sockets that have holes for the VGA signal pins. To check if these holes are present, look at the end of the plug for four holes that are arranged in a large box pattern. There should also be two small gaps in the shape of a cross located between the pins. These gaps are where the plastic tabs on a DVI plug fit when it is connected to a suitable DVI socket. If the gaps and the holes for the extra pins are not present, a VGA to DVI adapter cannot be used.

Installing a VGA to DVI adapter is no different to connecting a regular video cable, except that one extra connection has to be made. The first step is to make sure that the computer and monitor are turned off before removing or plugging in any video cables. It is worth doing this because it removes the risk of damaging the computer and monitor, and it only adds a minute or two to the setup time. Plug the adapter into the VGA socket on the computer and then connect the DVI cable to the other end. If there are any locking screws on the ends, they can be tightened to stop the adapter from being pulled out. After the equipment has been turned on, the video quality may appear slightly different, but this is only because an analog signal is now being used instead of a digital signal.

This VGA to DVI Adapter Review is Written/Updated on Dec 24th, 2010 and filed under Consumer Electronics. Both comments and pings are currently closed.

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