Sonnet"s 21-in-1 Multimedia Memory Card Reader & Writer ExpressCard/34 is a Simply Fast solution for moving files between your electronic devices memory cards and your notebook computer"s hard drive, with no cables required. This handy device works with the most popular memory card formats, including Memory Stick, MMC (Multimedia Card), SD (Secure Digital), XD-Picture Card, and all their variations, wide compatibility enables you to work with memory cards used in devices such as digital cameras, cell phones, MP3 players, digital picture frames, and more!