The SanDisk Memory Stick with Memory Select Function features advanced Memory Stick technology that combines two 128MB chips onto one memory card. A mechanical switch on the card enables you to easily switch from one chip to the other. Besides doubling your capacity, Memory Stick Select simplifies organizing your files. For example, you can store digital photos on Side A and use Side B for data. However you split it up, Memory Stick Select makes storing and finding your files much simpler. The SanDisk Memory Stick Select 256MB is not compatible with MagicGate, but is compatible with all digital cameras, handheld PCs, digital audio players and other devices that feature a Memory Stick slot.