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All the other brands went along (slrpnk.net)
submitted 2 years ago by to c/technology@lemmy.world
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[–] 8 points 2 years ago* (last edited 2 years ago) (1 child)

Correct. The other commenter is giving bad advice.

Both power delivery and bandwidth are backwards compatible, but they are independent specifications on USB-C cables. You can even get PD capable USB-C cables that don’t transmit data at all.

Also, that’s not true for Thunderbolt cables. Each of the 5 versions have specific data and power delivery minimum and maximum specifications.

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  • [–] 1 point 2 years ago (1 child)

    You can even get PD capable USB-C cables that don’t transmit data at all.

    I don't think this is right. The PD standard requires the negotiation of which side is the source and which is the sink, and the voltage/amperage, over those data links. So it has to at least support the bare minimum data transmission in order for PD to work.

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  • [–] 2 points 2 years ago* (last edited 2 years ago) (1 child)

    Technically, yes, data must transmit to negotiate, but it doesn’t require high throughput. So you’ll get USB 2.0 transfer speeds (480 Mb/s) with most “charging only” USB-C cables. That’s only really useful for a keyboard or mouse these days.

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