SanDisk 512 MB Memory Stick Micro M2 ( SDMSM2-512-A10AM ) Includes Memory Stick PRO Duo adapter for universal compatibility with M2 slots and Memory Stick PRO Duo slots Dual voltage operation; 1.8v for new Sony Ericsson mobile phones, 3.3v for Memory Stick PRO Duo compatible devices Controlled ejection design allows for easier removal Sony MagicGate encryption technology support 10 MB/sec read speed, 3 MB/sec write speed