It seems blocking/removing Pin 14 or cutting the wire should work [1] So yes, a simple passive HDMI ethernet filter should be possible. You can also buy cables

It seems blocking/removing Pin 14 or cutting the wire should work [1] So yes, a simple passive HDMI ethernet filter should be possible. You can also buy cables without ethernet, but then you also need do verify it actually isn't present. I knew ethernet was in the spec, but this is the first time I heard it actually works. https://en.wikipedia.org/wiki/HDMI#HDMI_Ethernet_and_Audio_Return_Channel https://en.wikipedia.org/wiki/HDMI#HDMI_Ethernet_and_Audio_R...