The four surrounding pins on the DVI-I cable are to carry the analog portion
of the DVI-I signal, useful for converting to VGA or other analog sources. They
are not used in the digital-only DVI-D signal.
The guide is correct: for a DVI-I to DVI-D connection, you will want to use
a DVI-D to DVI-D cable.
© 1986-2017 DataPro International Inc., Seattle, WA