Functions: 1) Card can be used as a traditional USB disk 2) Can als o be used as standard SD/MMC card, or digital camera, mobile phone, and PDA's media card 3) Standard SD/MMC and USB port, sharing storage media 4) Standard SD/MMC size 5) Only 2. 1mm thickness Advantages: 1) Standard size: Standard SD card size (32 x 24 x 2.1 mm) 2) High quality: Samsung A+ class flash chip applied 3) High speed USB disk: Standard USB 2.0 speed (R/W: 9.5 / 8.5M/s) 4) High speed SD card: Approx. 80X 5) SD card (may be different from various similar devices) 6) Capacity: 128MB - 4GB