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Comment by jboles

Windows 7 did for USB2 devices plugged into a USB1 port: https://www.makeuseof.com/tag/usb-speederror/

If the computer can identify the device’s capabilities (using some kind of bus command, I’m not very familiar with the USB protocol) separately from speed testing the cable+device combination, no reason why it couldn’t work for USB 2/3/4.

Of course, this approach relies on the device accurately reporting its capabilities, which may not be the case for the more cheap-and-cheerful gadgets.

parent jboles 7 years ago

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