US Patent 7975105 Solid state storage devices with changeable capacity

A reconfigurable type of flash memory-based storage device is disclosed. According to one aspect, a flash SSD comprises a data bridge and a plurality of flash memory cards. The data bridge includes necessary interfaces, a data buffer and a data management module to facilitate data exchange between a host and these flash memory cards. Each of the flash memory cards, such as an SD flash memory card, functions perfectly by itself. To facilitate the need of upgrading in terms of storage capacity, the SSD provides a plurality of slots to receive these flash memory cards As the storage capacity of the flash memory cards is increased over the time, so does the SSD by replacing only the flash memory cards.