2022年7月8日 星期五

recognize USB 2.0 / 3.0 with Linux

$ lsusb -t
$ lsusb -t
/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/8p, 20000M  //USB3.2
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
    |__ Port 4: Dev 12, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 2: Dev 13, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 8: Dev 3, If 0, Class=Vendor Specific Class, Driver=, 12M
    |__ Port 9: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
    |__ Port 9: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
    |__ Port 10: Dev 6, If 0, Class=Wireless, Driver=btusb, 12M
    |__ Port 10: Dev 6, If 1, Class=Wireless, Driver=btusb, 12M
    |__ Port 11: Dev 7, If 1, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 11: Dev 7, If 2, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 11: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 12M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M  //USB 3.1
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M

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