The original singlelink DVI is rarely used anymore if your laptop has a DVI connection, it's almost certainly using DVI Dual Link, with a maximum 60 hertz output of 2560×1600 This makes DVI incompatible with newer 4K displays (though technically the standard can handle the higher number of pixels at a lower 33 frames per second)DVII has two sets of signals a digital signal and an analogue one that is in the same format as VGA There is also a single and dual link variant of DVII, but most cables are dual link Note that this is something different from the DMS59Dual DVI adaptor cables used with some video cards A DVIVGA cable just hooks up the analogue signalsDVII is a single link connector having 23 pins and the duallink connector having 29 pins Connectors of DVII do not transform digital and analog signals When a video card, cable, or monitor is connected to the DVII connections then the potential to support both digital and analog signals is not offered Dvi I Single Link Vs Dual ...