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Comment by qwerty456127 | Hacker News Reader

> If confirmed, this would align the new HDMI standard with the latest DisplayPort 2.1 technologies, offering consumers expanded options for ultra-high-definition media and gaming experiences.

Why do we need new HDMI when there already is DisplayPort for this?

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HDMI supports features needed for entertainment centers, like CEC and eARC. DisplayPort doesn’t have these.

Curious. Never heard of these. Thanks.

Because HDMI connectors can fit on PCBs.

https://forum.kicad.info/t/hdmi-pcb-edge-connector-for-raspb...

Never tried that with a DisplayPort connector.

I've never seen a single commercial device do that. I wouldn't be surprised if it isn't allowed.

That's not a reason to keep HDMI. Obviously the real reason is that HDMI makes money for the people selling it.

HDMI connectors are easier to plug in correctly the first time, and their cables usually flex more.

I always feel like those thick DisplayPort cables are going to rip the port off the PCB.

Even with HDMI it's an actual concern. There should be some rubber suspension on every port to allow for some torquing.

The cables flex more because it's lower bandwidth so there's less shielding.

There’s no reason DisplayPort couldn’t do the same thing. The connector on the inside is basically identical.

That being said, although creative, it’s a pretty terrible idea. PCBs are not meant to be edge connectors. Especially if they aren’t designed for it (ie using hard gold on the edge connector plating).

Sorry, I didn't know that PCB edge connectors were a terrible idea! I saw it on a PCIe slot before and thought it might work.

The other comment from @wtallis has a good point about electromagnetic interference (EMI). But I think it's shielded when it's plugged in, by the female connector.

To be clear: PCBs are acceptable as edge connectors assuming they’re designed for it, but unless you use the proper plating the number of insertions from a normal PCB plating (ENIG) is likely in the low double digits (10-20 times).

For those applications wouldn't MiniDP work just as well? Or DP-over-USB C?

Oh, that's a neat edge connector idea, I've only seen this done with USB before.

Yeah, that's definitely never going to pass EMI testing.

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