メモリースティック
Sony has released different versions of Memory Stick PRO Duo. A Memory Stick PRO Duo with MagicGate was released as a 512 MB stick. Additionally, a 16 GB version on March 2008 and another a 32 GB version on August 21, 2009. In 2009, Sony and SanDisk also announced the joint development of an expanded Memory Stick PRO format tentatively named "Memory Stick PRO Format for Extended High Capacity". Sony has since finalized the format and released its specification under the new name, "Memory Stick XC" (see below).