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posted by martyb on Wednesday September 04 2019, @05:55AM   Printer-friendly
from the Waiting-for-Godot,-again dept.

As reported at C|net, USB4 is ready to go.

USB4 is done, the group developing the next version of the immensely successful USB connector technology said Tuesday. USB4 doubles speeds compared to today's fastest USB 3.2 by incorporating Intel's speedy Thunderbolt technology that you already see on high-end laptops and peripherals. The USB Implementers Forum announced the completion of the technical specification Tuesday, a move that frees hardware and software engineers to get cracking building the actual products to support it.

Today's USB 3.2, which enables data transfer speeds up to 20 gigabits per second, is still something of a rarity; most of us have earlier versions of the technology that works at 5Gbps or 10Gbps. USB4 promises a speed boost to 40Gbps, helpful for things like using multiple external displays or fetching files from external hard drives.

What is the Serial Bus equivalent of, "Looks like I'm going to have to buy the White Album again."?


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  • (Score: 2) by Immerman on Wednesday September 04 2019, @02:49PM

    by Immerman (3985) on Wednesday September 04 2019, @02:49PM (#889546)

    USB doesn't prevent n-key rollover - that's entirely down to the keypad matrix used by the keyboard manufacturer, and the USB protocols that they choose to implement.

    If they only implement the baseline HID "boot protocol" they're limited to 6-key-rollover (plus the 8 modifier keys). If they also support HID "report protocol" then they can provide n-key-rollover, assuming the computer supports it as well.

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