SanDisk Memory Stick PRO Duo is half the size of a standard-size Memory Stick PRO media and it offers the same technologies including high speed data transfer, built-in MagicGate, and high capacities. The Memory Stick PRO Duo is the ideal solution for the most portable devices such as pocket-size digital cameras and with the use of Adaptor, it can be used in all PRO-compatible devices. Advanced Features: High speed data transfer Embedded MagicGate technology for safe transfer of copyright protected content MagicGate is a copy-protection technology introduced by Sony and functions by encrypting the content on the device and using MagicGate chips in both the storage device and the reader to enforce control over how files are copied. Adaptor included Compatible to all MS PRO devices with the use of the Adaptor