Abstract: An AC/DC adapter having a main body for converting AC power into DC power and a DC power cable connected to the adapter main body. A power supplying jack is provided at an end of the DC power cable and connected to a connection port of one of a plurality of electronic devices constituting an electronic system to supply DC power therethrough. At least one grounding cable branches off from the DC power cable and forms a grounding path. A grounding jack is provided at an end of the grounding cable and is connected to a connection port of another electronic device of the plurality of the electronic devices to connect the grounding cable and a grounding area of the another electronic device of the plurality of the electronic devices.

Abstract: A portable computer system having a computer body and a display unit coupled to the computer body includes a docking station to be connectable to and disconnectable from the computer body, a heat discharging member provided on the computer body to cool a heat generating component mounted on the computer body, at least one first heat transmission member provided on the computer body and connected to the heat discharging member to be in contact with the docking station, and at least one second heat transmission member provided on the docking station to be in contact with the first heat transmission member and to discharge heat from the computer body. Thus, the portable computer system is capable of discharging the heat generated from the computer body through the docking station.

Abstract: An AC/DC adapter having a main body for converting AC power into DC power and a DC power cable connected to the adapter main body. A power supplying jack is provided at an end of the DC power cable and connected to a connection port of one of a plurality of electronic devices constituting an electronic system to supply DC power therethrough. At least one grounding cable branches off from the DC power cable and forms a grounding path. A grounding jack is provided at an end of the grounding cable and is connected to a connection port of another electronic device of the plurality of the electronic devices to connect the grounding cable and a grounding area of the another electronic device of the plurality of the electronic devices.