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by megous 2671 days ago
It's necessary to negotiate the power requirements.
1 comments
Sholmesy 2671 days ago
I did not know this, that is interesting.

As in, the OS driver for the USB controller? Feels like a lot.

link
megous 2670 days ago
Google USB-PD. Devices on either end of the USB cable could be dumb, and it would revert to some base minimum requirements (5V 500/900mA or so). But notebook may not be able to negotiate for higher power or higher voltage for charging.
link