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Some basic info about USB (lemmy.world)

submitted 2 months ago by [email protected] to c/[email protected]

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[–] [email protected] -1 points 2 months ago* (last edited 2 months ago) (4 children)

Why would you need them on a MacBook? They're always* Thunderbolt.

Edit: Better explained by GamingChairModel below. I entirely forgot one series of MacBook, and also forgot when the older ones did have the Thunderbolt symbol on them.

[–] [email protected] 8 points 2 months ago (3 children)

No they aren't. Only some are.

https://support.apple.com/en-us/109523

[–] [email protected] 5 points 2 months ago (1 children)

The only devices that don't have at least Thunderbolt 3 on all ports do use the Thunderbolt logo on the ones that support it, except the short-lived 12-inch MacBook (non-Pro, non-Air). Basically, for data transfer:

If it's a 12-inch MacBook, the single USB-C port doesn't support Thunderbolt, and only supports USB 3.1 Gen 1.
In all other devices, if the ports are unmarked, they all support Thunderbolt 3 or higher
If the ports are marked with Thunderbolt symbols, those ports support Thunderbolt but the unmarked ports on the same computer don't.

For power delivery, every USB-C port in every Apple laptop supports at least first generation USB-PD.

For display, every USB-C port in every Apple laptop (and maybe even the desktops) supports DisplayPort alt mode.

It's annoying but not actually that hard to remember in the wild.

[–] [email protected] 1 points 2 months ago

I completely forgot the 12-inch one existed.

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