The HDMI® Micro format (type D) was designed to combine audio and video into a single digital device which would be small enough to connect smartphones, tablets, and other mobile devices to audiovisual devises such as TV's, computer monitors, video projectors, etc.
Because of its HDMI® with Ethernet capabilities, it also allows you to share an internet connection between your devices without the need for a separate Ethernet cable. Always have connectivity on hand with a HDMI®-Micro D cable!