Sony 128 MB MagicGate Memory Stick (MSG128A) Here's a vast, microscopically contained world for music and data, designed for the NWMS9 and other Sony digital music players, as specified Also useable in various new Sony notebook computers and a continuously expanding line of Sony digital products Fits in the MagicGate(TM) slot Can be used with other compatible Memory Stick devices such as digital still cameras, camcorders, PCs, or voice recorders