A bus data interface, structure and method for transmitting the data of a PCI bus is disclosed. The air conditioning curtain device comprises a piece of material with a continuous opening therein. Based on an indication of traffic type, a controller of at least one input port selects one of the two sections. Thus, an investment cost of an instrument infrastructure can be greatly reduced, and an exchanging time of an insert can be reduced, and thus human power and time can be reduced. The arrangement of containers and folders can be representative of an organization structure of a division of the enterprise.