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Treba.. ze USB version v deskriptoru bude 2.0 a..

As the guys on the official usb site would say:
'Why would you want to design a new device to an obsolete specification version?'

Treba atxmega ma stejny 2.0 bez highspeed... nasel jsem tohle zhrnuti, pokud te to zajima:

https://forum.microchip.com/s/topic/a5C3l000000M10SEAS/t233928