The DVI connection

DVI plug DVI is a kind-of digital version of VGA designed for TFT's/LCD's and Plasma's. DVI sends the picture in digital format meaning there is no conversion required (analogue to digital) in PC's and devices to a TFT/LCD or plasma.

There are also 3 sub versions of DVI, they are:
  • DVI-D : Digital only
  • DVI-A : Analogue only
  • DVI-I : Analogue and Digital

In most AV equipment you will find DVI-D is used and on PC's DVI-I is used. This is not a problem because DVI-I contains digital and analogue. DVI-D and DVI-A on the other hand would not be compatible (one is digital, the other is analogue). DVI-A is very rare, so the chance of finding a DVI-A is remote.

There is also single-link and dual link DVI. Single link allows up to 1920x1200 at 60Hz but no more. However for higher resolutions you will need to use a dual link connection. Dual link doubles the bandwidth of single-link allowing for higher resolution like 2560x1600@60hz.

DVI only carries the picture, unlike HDMI which carries digital sound and picture.