Abstract: A device and method of network communication can receive a control/data signal from a computer motherboard via a storage interface bus and output a storage/network data packet to a network via a network connection port, so that the computer can access the network and a storage device such as hard disk via the device or the method of the present invention. Therefore, the cost of maintaining the storage device and the risk of destruction by computer virus is reduced. Wherein the device of the present invention includes a storage controller for converting the control/data signal into a storage signal, a network microprocessor for converting the storage signal into a storage data packet and a wireless/wired switching agent for converting the storage data packet and a network data packet into the storage/network data packet.