Why aren’t motherboards mostly USB-C by now?
philip.greenspun.com
Why aren’t motherboards mostly USB-C by now?::I’m beginning to think that the Windows PC that I built in 2015 is ready for retirement (though if Joe Biden can be president at 78, maybe this PC can last until 2029?). In looking at new des…
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Almost none of the alternate modes or advanced features are required for USB-C devices. Most smartphones don't support high data rates over their single USB-C port. There are are probably more USB-C ports using the USB 2.0 specs, for example peripheral devices like mice or keyboards. Beyond stuff like DisplayPort alternate mode, there still isn't a big demand for more than one or two USB-C ports with high data rates or the full feature set.
In USB-4 the only "alt" mode is Thunderbolt, which is basically PCI over a cable.
USB 4 has both PCIe and Display Port alternate modes. Not all USB-C ports are USB 4 though unfortunately.