Abstract: A super speed USB hub includes an upstream port, a plurality of device ports, a transaction dispatching unit, a downstream buffer, a hub local packet parser, a traffic control unit, and a forwarding unit. The transaction dispatching unit is used for receiving a plurality of packets from a USB host, wherein the plurality of packets comprise a plurality of downstream packets and a hub command packet. If the hub command packet contains a traffic management command, the hub local packet parser generates a selected target and a control mode according to the traffic management command. The traffic control unit is used for managing a downstream packet corresponding to the selected target among the plurality of downstream packets in the downstream buffer according to the selected target and the control mode.