Memory Stick Pro

Memory Stick is a removable flash memory card format, launched by Sony in October 1998 , and is also used in general to describe the whole family of Memory Sticks. This family includes the Memory Stick PRO, a revision that allows greater maximum storage capacity and faster file transfer speeds. Most devices that use the original Memory Stick form factor support both the original Memory Sticks and the PRO Sticks. All Memory Stick PROs larger than 1 GB support this High Speed mode, and High Speed Memory Stick Pros are backwards-compatible with devices that don't support the High Speed mode. High capacity memory sticks such as the 4 GB versions are expensive compared to other types of flash memory such as SD cards and CompactFlash.