What does it mean "with Ethernet Cable"? How or why would that be necessary?

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In short, (and not to be a smart butt) an HDMI Cable with Ethernet means that it has an ethernet cable inside that allows you to connect all of your electronic devices to the internet, without using an ethernet cable for your setup.  More specifics at hdmi (dot) org and look under the "1.4" and/or "1.4a" specs (won't allow links posted)

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