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Why aren’t motherboards mostly USB-C by now?
(philip.greenspun.com)
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this post was submitted on 19 Nov 2023
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Yeah I recently started using a motherboard that has a 6-pin GPU style header for powering the USB-C ports. It limits power delivery capacity if you don't plug the connector in, but if you do it supports 100W ports.
100W on each port or 100W total output for all 6 ports? I seriously doubt your power supply will deliver 600W on one peripheral cable.
No it limits the total amount, but it is reasonable that they added a dedicated power input. I'm guessing we'll see even more of that on ATX12VO motherboards or similar. Seems like power standards are changing a lot and manufacturers are waiting for things to settle down.