direi che il risparmio energetico quando le porte non sono utilizzate (nessun dispositivo connesso) sia del tutto irrilevante ai nostri fini...µPD720200A is pin-to-pin compatible with µPD720200 and added following features.
Realize low power consumption during idle state
µPD720200A realizes 1/5 power consumption comparing with µPD720200 during the system like as PC is working and not connected any USB devices.