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    One thing made me curious about your question, did you really see the BUS numbers change after a reboot? I was always confident that unless you change the hardware or update the BIOS the BUS numbers will not change. USB buses are simply hubs/controlers connected to PCI buses (in all cases i saw at least), and PCI bus info comes from BIOS. But I might be wrong, don't wanna make an answer and talk crap in it. Commented Jul 21, 2016 at 16:56
  • right, only when I have hardware change looks like. Commented Jul 21, 2016 at 20:15