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Apple iPhone 15 relegated to USB 2.0 unless you buy the Pro
(www.pcgamer.com)
This is a most excellent place for technology news and articles.
I think you may be mistaken, friend. The USB 3.0 controller is part of the A17 Pro SoC. It was specifically called out during the keynote when discussing the A17 Pro. You can read about it here too: https://www.tomshardware.com/news/apple-a17-pro-3nm-iphone-15-pro
Quite possible. Not sure why they would do that since there are plenty of IO chips out there, but it's Apple... many things are a mystery.