Information on Ethernet Channel Support for HDMI ports connected to Intel® Integrated Graphics.
HDMI 1.4b specification features HDMI Ethernet Channel, which adds high-speed networking to an HDMI link, allowing users to take full advantage of their IP-enabled devices without a separate Ethernet cable; a very important advantage with so many devices now connecting to the internet. This requires the use of the High Speed HDMI Cable with Ethernet
Intel Integrated Graphics do not support HDMI Ethernet Channel.