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HDMI arc cable with Ethernet?

EntropicPie
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I bought a Bose sound bar, and with it came an HDMI cable (for arc) on which it said that it supported Ethernet. I haven’t heard of this before but I figured because it’s Bose there’s something behind it, anyone know what’s going on here?

 

(barely visible in photo, second line)image.thumb.jpg.8c501909e250a3cc04a2d6c96b412bfd.jpg

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That's been in HDMI since 1.4 in 2009. https://en.wikipedia.org/wiki/HDMI#HDMI_Ethernet_and_Audio_Return_Channel

 

Probably why it's usually not mentioned because it goes without saying. 

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The idea was that you could share your internet connection over HDMI. No device has ever implemented this though since everyone can use wifi or a network switch. The same pins are used for ARC. You'll still find cables with Ethernet which just means they can do ARC.

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