10.1" Display Ribbon Cable Orientation

I just received my LattePanda and 10.1" display. This may be a dumb question but I don't see any orientation marks on the LattePanda, display or ribbon cable to know how to orient the ribbon cable when plugging into the LattePanda connector and display connector.Once one side of the ribbon cable there is LCM with an arrow on once end and the other end has Main Board with an arrow. Obviously the Main Board end goes to the LattePanda but which orientation of the cable? Main Board printing on top or bottom?