What is HDMI eARC? Why is it different to HDMI ARC?

What is HDMI ARC? - Quora

What are ARC and eARC? HDMI Audio Return Channel explained

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HDMI ARC/eARC: the one-cable TV audio tech fully explained

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HDMI ARC vs eARC - What is the difference? Simple explanation

What is HDMI-eARC/HDMI 2.1 and How Does it Differ from HDMI-ARC? – Klipsch

What is eARC and how is it different from ARC?

Features, Specifications, Manuals, Q/A, HDTV Supplys WolfPack™ 4K 60 HDR HDMI eARC Extractor allows you to send HDMI audio for the ARC or eARC TVs

WolfPack 4K 60 HDR HDMI eARC Extractor

HDMI ARC vs. Optical – Which Is Better?

HDMI ARC and HDMI eARC explained: The evolution of the Audio Return Channel

So I'm a noob with all of this. Would I connect my PS5 to either HDMI 4 or 3? Why is eARC/ARC only on one also and isn't that merely for speakers?

HDMI ARC and HDMI eARC: Everything to know - Reviewed

What is HDMI ARC, And Do I Need It? – iVANKY

What is eARC and how does it compare to HDMI ARC? - SoundGuys