An access point including a transceiver having first and second physical layers to communicate at first and second data rates, respectively. Monitoring signals on the memory bus of the host system, detecting a first sequence of signals, and switching control of the at least one memory element to the circuit coupled to the memory bus on the host system. An image heating apparatus is achieved which prevents increasing the temperature at the area through which a recording material does not pass. Accordingly, spaces are created at places being closer to the contact chamber side than the C ring side of the terminal bolts are, by interposing O-rings with large thickness in the spaces in elastically compressed states, whereby an airtightness of the contact chamber can be secured without expanding an outer diameter of the contact cover. Based on the communications, the given peer communication device may exit the active operating state and enter a low power operating state. Positive-side and negative-side voltage power lines of each of the positive-side and negative side voltage management ICs are connected to positive-side and negative-side output terminals of the battery equipment so that all the battery modules supply electric power to each of the voltage management ICs.