I was not able to google out output of lsusb command for this board. It would tell you which USB controller is the USB-SATA bridge hooked to. The H3 block diagram H3_Allwinner Technology talks about 3 USB hosts, I would assume 3 independent USB controllers (i.e. busses).
The lsusb printout shows there is nothing hooked to the second USB bus, while the first has a usb hub (very likely onboard) with MS mouse, Dell keyboard (with internal hub) and RPI touchscreen. The discussion (ODROID Forum • View topic - 9" lcd touch screen will run??) did not reveal which USB connectors the guy used.