A network switch for switching packets from a source to a destination includes a source port for receiving an incoming packet from a source, a destination port which contains a path to a destination for the packet, and a filter unit for constructing and applying a filter to selected fields of the incoming packet. The fixing member is connected with a connecting plate of a swing-arm of the golf bag cart, having a chamber formed in one side. The drive input shaft is connected to a sun gearwheel of the second planetary gearwheel assembly and can be connected via the second shift control element to a sun gearwheel of the first planetary gearwheel assembly and via the fifth shift control element to a web of the first planetary gearwheel assembly. The logical circuit logically processes the voltage logic signal and the command signal to generate different switch signals, and the switch unit is controlled by the switch signals from the logical circuit to connect to the first antenna or to the second antenna to transmit the wireless signals. The heat generated by the heat source is removed and carried away via the effective heat transfer to a remote end such that the temperature surrounding the heat source can be kept at low temperature and the effect of improved cooling can be advantageously achieved. The communication module also includes a flex cable assembly that is coupled at one end to the array of electrical contacts and at an opposite end to the board interconnect.