SanDisk and Sony announced the 'Memory Stick PRO-HG' format, an expanded format from the 'Memory Stick PRO'. This new Duo-sized card ups the maximum storage capacity to 32GB and uses an 8-bit parallel interface in addition to a conventional serial and 4-bit parallel interface. It has a 60 MHz clock frequency and supports data transfer speed up to 480Mbps, three times faster as that of 'Memory Stick PRO' media. The minimum write speed at 8-bit parallel transfer is 120 Mbps, or 15MB/s.