Force transmitting connection for connecting first and second cast structural component parts having an insulation body for thermal separation of the cast structural component parts limited by two support surfaces. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The user-level data is accessed during a boot-time of a computer. A length of the tissue engaging member may be selectively adjustable by a user so as to provide a retraction force. By providing one common power supply for the primary transfer and the secondary transfer power, the intermediate transfer member and the second current supplying member can be cleaned stably and efficiently.