Hub device and control system

Abstract

A hub device including an upstream-facing port, a first downstream-facing port, a second downstream-facing port, and a control chip is provided. The upstream-facing port is coupled to a host device and receives specific data from the host device. The first downstream-facing port is coupled to a first storage device. The second downstream-facing port is coupled to a second storage device. The control chip includes a first transceiver interface, a second transceiver interface, a third transceiver interface, and a control circuit. The first transceiver interface is coupled to the upstream-facing port. The second transceiver interface is coupled to the first downstream-facing port. The third transceiver interface is coupled to the second downstream-facing port. The control circuit is coupled to the first, second, and third transceiver interfaces. In a mirror mode, the control circuit copies data in the first storage device to the second storage device or a memory.

Dependencies are inferred from the claim text.