Both DisplayPort and HDMI cables facilitate the transfer ... DP cables were designed to replace the older DVI, LVDS, and VGA ...
The HDMI interface is electrically identical and compatible with the video-only DVI interface, which came first. For example, if a cable box or PC has DVI out, but the TV or monitor only has HDMI ...
HDMI connections ... it zips across your cable, and it's up to the display to convert that digital information into an image ...