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Saudi Arabia mandates all electronic devices to use USB-C charging ports from 2025
(www.gsmarena.com)
This is a most excellent place for technology news and articles.
I dunno about the SA law but the EU law mandates USB-PD support.
Of course they can't mandate the wattage level since every device will have different wattage needs, but I can use my $35 100W USB-PD charger with any USB device I have at home just fine
What is the law solving then? You still have many chargers with different support for power, voltage, etc. You just have one "shape" now. And I'll still have multiple adapters since I'm not shelling out 240W prices to have a charger in my car for my phone.
It's just standardization for the sake of standardization.