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... Memory Stick PRo Duo Converter MSDX2-ADP3. It sold for 980 ... I ended up buying the microSDHC to Memory Stick PRo Duo Converter and a 4 GB SDHC microSD Card.
There is no unlock switch on a Memory Stick Duo. The files might be set to read-only. Try formatting the stick, or removing the read-only flags on the files.