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Apple’s Vision Pro battery pack is hiding the final boss of Lightning cables
(www.theverge.com)
This is a most excellent place for technology news and articles.
Is it just for power, or does it double as some kind of data cable?
It has 24 pins. Power would be two or three pins.
24 is exactly the number you'd need to have a thunderbolt connection... which could be interesting, though I don't think Apple has said anything about it being used for that.