root@NanoPC:~# lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=exynos-ohci/3p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=s5p-ehci/3p, 480M
|__ Port 2: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
|__ Port 1: Dev 3, If 0, Class=(Defined at Interface level), Driver=dm9620, 12M
|__ Port 3: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 3: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 5: Dev 5, If 0, Class=Vendor Specific Class, Driver=, 480M
妈的还3P
