I just went over the KiCAD schematics for the A64-OLinuXino board and from the specs it appears there is 1x USB-OTG and 1x USB Host. However, I'm not sure how many physical USB ports are connected to the host? From the schematic, it appears as one (USB1), but from the board, I see 6 holes which probably correspond to 2x D+/D- and 2 for power and ground. So which is which? It also appears there is no root USB hub.