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I miss having a thousand different cables to keep track of /s
really, all we need is the companies to start packing those laptops with thunderbolt3 or equivalent USB-C (USB 4). I love the old ports, but they were unnecessary. I'd rather the industry finally takes on the open thunderbolt standard and we're all good to go. With 10 thunderbolt ports you have 10 HDMI, or 10 USB, or 10 Ethernet, or 10 headphone jacks, or 10 RJ45 or whatever you need + PCIe tunneling.
Assuming you have the adapter for each of them
The intent isn't to adapt the old cables to a new port, but to just make all the cables USBC / Thunderbolt.
Or assuming that since the whole industry decided to move on to it, they moved on from the old cables. A hub would also be a great idea, unfortunately hubs don't exist.
What is really unnecessary is to have the ability to transfer 20GB/s from your mouse or keyboard.
If you have multiple ports driven off the same internal hub, they will share bandwidth.
You still need hardware significantly more complex than would be otherwise needed for a device for which USB 2.0 speeds were already much more than required.
I don't really understand how USB stuff works (what is the difference between a hub, interface, and controller?) but from what I've seen I think a hub supporting 20gbps would probably be in the 5-15$ range and probably not larger than a few centimeters
That is true. Lets go back to PS/2.