Hub of interfaces provides the electrical connection between the host and terminal devices. It enables USB interface to be easier to use for common users. They take care about the behavior of connectivity, power management, bus failure detection and recovery of bus and support facilities in all speed modes.
USB 3.0 hub includes an USB 2.0 hub and SuperSpeed hub. SuperSpeed hub further consists of a Repeater and Hub Controller:
SuperSpeed Hub also takes care about packet routing as it is described in previous chapters. USB 3.0 Hub is a logical combination of USB 2.0 hub and SuperSpeed hub. Control logic for VBUS is only one shared part of the logic, as it is shown in the following figure.