Sony has today also announced an expansion to its Memory Stick line-up. This includes the new Memory Stick PRO Duo with capacities of 256MB and 512MB, Memory Stick Duo in sizes up to 128MB and the MSAC-US30 Memory Stick USB Reader/Writer which supports all Memory Stick formats. “People need high-speed transfer rates, resilient readout and ultra-compact design to get the most out of their networked products, whether they are at their desk, in an airport or on the beach. This new Memory Stick Duo line-up is a major step towards delivering this.”