A structure of a supporting assembly for a surface mount device LED and a manufacturing method thereof are provided. A data storage subsystem comprises a blade system with a plurality of slots, the blade system configured to support a plurality of blades and a storage system, each arranged in a predetermined slot of the blade system. A protective layer is formed over the underlying calibration layer. The mounting member is configured to be removed from the base to facilitate viewing and handling of the display item. A protective layer is deposited on the mask layer and on the substrate. In an assembly station, units made up of a plurality of, in particular four, packs are combined to form a functional unit and, thereafter, are transported in an appropriate conveying cycle and processed simultaneously in the region of operating stations.