/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/14p, 480M
    |__ Port 3: Dev 100, If 0, Class=Printer, Driver=usbfs, 480M
    |__ Port 3: Dev 100, If 3, Class=Printer, Driver=usbfs, 480M
    |__ Port 3: Dev 100, If 1, Class=Printer, Driver=usbfs, 480M
    |__ Port 3: Dev 100, If 2, Class=Vendor Specific Class, Driver=, 480M
    |__ Port 7: Dev 121, If 0, Class=Mass Storage, Driver=usb-storage, 480M
    |__ Port 13: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 13: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
    |__ Port 14: Dev 5, If 0, Class=Hub, Driver=hub/3p, 12M
        |__ Port 1: Dev 6, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 1: Dev 6, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M