[root@LightYagami maniactwister]# lsusb -t
/: Bus 09.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/4p, 12M
/: Bus 08.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/2p, 12M
/: Bus 07.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/5p, 12M
/: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=ohci-pci/5p, 12M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/4p, 480M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/5p, 480M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/5p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=rt2800usb, 480M
|__ Port 2: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M