A method and system for storing a semantic object includes summarizing the attributes of a semantic object, indexing the summary of attributes, and storing the summary of attributes and the index of the summary of attributes. Preferably the collar therefore comprises outwardly projecting and elongated angled ribs for forming complementary elongated grooves in the outer surface of the ferrule. The cable management hub further includes one or more buttons, each of which is configured to generate an electrical signal when pressed by a user that indicates a desire by the user to transfer control of the audio-visual presentation equipment from a previous user, if one exists, to the user that pressed the button. Information is read from the smart card and forwarded to the controller module. The operating speed of the first DRAM section is higher than that of the second DRAM section, and the capacitance of each said first memory cell is larger than that of each said second memory cell.