Panasonic RP-SD032 SD Memory Card, 32 MB Only about the size of a postage stamp, the Panasonic RP-SD032 32 MB SD memory card lets you store pictures, music, and other types of data with a range of compatible devices (digital cameras and camcorders, portable Internet audio players, and more). Unlike similar-looking MultiMedia cards, SD cards feature an authentication chip which makes them compatible with SDMI-compliant music players.