The upstream port has power supply function, so it can be used with USB 3.0 AOC which has no difference between source and sink.
Isikhumulo esikhuphukayo sinomsebenzi wokuphakelwa kwamandla, ngakho-ke singasetshenziswa nge-USB 3.0 AOC engenawo mehluko phakathi komthombo nokucwila.