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1.What is DVI?

DVI (Digital Visual Interface) is a video connector designed by the Digital Display Working Group (DDWG), aimed at maximizing the picture quality of digital display devices such as digital projectors and LCDscreens. It is crafted for transporting uncompressed digital video information to a display screen. It is partly compatible with the High-Definition Multimedia Interface (HDMI) standard in digital mode (DVI-D), and VGA in analog mode (DVI-A).

2.What is the main difference between HDMI and DVI

Fundamentally, the video portion is same as DVI. The main difference is that HDMI also carries multichannel digital audio. DVI only supports video. HDMI is backward compatible with DVI.

3.What does single link or dual link mean?
DVI-D and DVI-I connectors come in single link and dual link formats.  Dual link DVI has more pins and allows for a higher resolution and faster refresh rates. Single link can display up to 1920x1080 @ 60 Hz and dual link can display up to 3840x2400 @ 41 Hz.

4.DVI on Fiber

DVI on Fiber is the method of sending high quality, uncompressed signals through fiber optic cables (usually for moderate to long distances). Fiber optic cables are generally made out of extremely thin glass type rods that send signals via light pulses instead of electricity. DVI fibers are generally used for pro amateur and professional audio and video set ups to maintain extremely high quality reproduction. Two main reasons why DVI is used on fiber is that, it can send lots of information quickly- commonly referred to as high bandwidth and that there is low loss of signal when traveling far distances.

5.I have a DVI monitor, but video source is HDMI. Will my system still work?

Yes. Lots of the newer DVD players have HDMI connectors, but you may still have a DVI monitor. You can still view digital video all you need is to use a HDMI to DVI cable or HDMI to DVI adapter if you already have a cable around the house. However, no digital audio can be passed to the DVI monitor through the DVI connector. Either a RCA stereo or a Toslink connector for digital audio can be used instead