DVI To VGA Adapter

One of the major changes that has been occurring in the world of computing over the past few years is the introduction of flat panel monitors. Older monitors with VGA plugs are steadily being replaced by newer monitors with DVI plugs. These two plugs are incompatible with each other because they have different pin numbers and layouts. The DVI to VGA adapter allows the plugs to be joined together. Most new computers come with an adapter already included, and they can be purchased separately if an extra one is needed, usually for less than ten dollars.

Before flat panels appeared, computer monitors used cathode ray tubes (CRT) that were bulky, heavy, and consumed a lot of power. They were similar to old-style televisions but had a much higher resolution. CRT monitors receive their analog video signal through a Video Graphics Array (VGA) plug connected to a computer. The newer plasma and liquid crystal display (LCD) monitors use the Digital Visual Interface (DVI) plug. The VGA plug has only fifteen pins but there can be up to twenty-nine pins on a DVI plug, allowing it to transmit more data and support higher resolutions.

Most new computers bought today do not require a DVI to VGA adapter because they come with a flat panel monitor that has a DVI plug. However, there are some computer users that need an adapter because they choose to use a new computer with a CRT monitor that has a VGA plug. An adapter is also required if two CRT monitors are connected to a computer that has one DVI socket and one VGA socket. Also, there are many projectors still in use that have a VGA plug and need an adapter if they are used with a computer that only has a DVI socket.

The DVI to VGA adapter is one of the simplest computer gadgets available. It is essentially a male DVI plug joined to a female VGA socket. It is sometimes called a DVI to HD15 adapter, after the official name for the fifteen-pin VGA socket. The plug and socket are usually housed in a rigid plastic body, but there are some models that have the two plugs connected by a short length of cable. The adapters are inexpensive, compact and lightweight enough to be carried around in a pocket. There are also adapters available with reversed genders on the plug and socket.

Before buying a DVI to VGA adapter, consumers should be aware that not all DVI sockets can be used with a VGA monitor or projector. The DVI-I socket has both analog and digital signals but the DVI-D socket is digital only. Most types of DVI socket look very similar and it can be difficult to tell them apart. One way to identify the type is to look for a small cross surrounded by four pin holes on one side of the socket. These are the connectors that carry the analog signal. A DVI socket with this cross arrangement can normally be used with a VGA monitor or projector.

A DVI to VGA adapter is a very simple gadget that almost every computer user can install quickly and without much trouble. The computer and monitor must first be turned off before the adapter can be installed to prevent any electrical problems. The DVI end of the adapter is plugged into one of the sockets on the back of the video card. Most adapters have two screws, one on either side, to stop it from being pulled out of the socket accidentally. The VGA plug on the monitor cable is then plugged into the other end of the adapter and should also be secured if it has two screws.

This DVI To VGA Adapter Review is Written/Updated on Nov 26th, 2009 and filed under Computer Hardware. Both comments and pings are currently closed.

Comments are closed