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Cake day: July 31st, 2023

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  • s_s@lemm.eetoTechnology@lemmy.worldSome basic info about USB
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    10 days ago

    Sometimes people want to charge their phone in an outlet 10 feet from their airport seat.

    Sometimes people want to transmit 8k video.

    It’s not physically possible to do both tasks with the same cable.

    But because USB is a flexible standard, we don’t have two incompatible specs to do the same thing. So when you get out of the airport and to your meeting, you can actually plug your phone into the meeting room projector for your business presentation. That’s a win.


  • s_s@lemm.eetoTechnology@lemmy.worldSome basic info about USB
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    10 days ago

    It has to be optional to remain a “Universal” spec.

    If it had more requirements, it would be more cumbersome to implement and device manufacturers would come up with completely different, completely incompatible cables and ports (a la Apple’s lightning) that would cause you even more headaches.


  • s_s@lemm.eetoTechnology@lemmy.worldSome basic info about USB
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    10 days ago

    People do not want to be limited to 1m long cords or only have thick and stiff Thunderbolt3 cords with 20 different conductors for a wired mouse.

    Minimum specs like you are proposing just make the standard less useful and would lead to more competing specs that aren’t compatible at all (a la lightning cables).

    To be a truly “universal” spec, flexibility is king.




  • s_s@lemm.eetoTechnology@lemmy.worldSome basic info about USB
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    10 days ago

    If you have a 3.0 port on one device, a 2.0 port on the other device, and a 3.1 cable, you get 2.0 transfer speeds.

    USB ports are not labeled with numbers. You just made up numbers to name several different things.

    This is why you think things are “poorly labled”. Your headcannon is broken, not the labeling.


  • s_s@lemm.eetoTechnology@lemmy.worldSome basic info about USB
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    10 days ago

    USB in 1996: lets let you plug any device into the back of your computer.

    USB in 2024: phones, tablets laptops are going to charge at crazy voltages and we’re going to show you 8k video all over the same port and you can insert it in both directions and we’re still going to connect any device to any device.