A retaining structure mounts two independent computers within one standard slot of height 1 U in a computer cabinet. A driving machine drives an ascending driving unit and a descending driving unit at the same time. The system may automatically parse incoming messages for the requested information which may be extracted and stored automatically. In the second organic film etching step, the remaining portion of the organic film is etched after the treatment step. The \u201cconfirm\u201d sound signals the start of the response time. The higher level of cooling in the first mode used during the start-up procedure can involve a colder cryogen, or a greater flow of coolant.