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by LeifCarrotson
1039 days ago
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HDMI has several versions with compatible connectors. Later versions of the spec use some previously-unused pins, if you buy a cable without those wires connected (pre-1.4) you won't get Ethernet over HDMI or the audio return channel. Also, just like Cat 3 phone cable, Cat 5/5e/6 optionally-shielded Ethernet cables, the data lines can be designed for different clock rates. An ancient cable wired into the walls of your early-2000s home theater may legitimately not support your new 4k HDR gear. |
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