WOPUTUO Portable Handheld Scanner with 900 DPI Resolution, LCD Display, Over-Speed Alarm and Mono Handyscan For Document, Photo, Magazine, Books, JPG/PDF Format Selection - SNA6 Red Driver free to download for windows7/vista/xp and mac OS10.4 or above(direct plug-in, driver installation not required) JPG/PDF files can be saved directly to your micro SD or to your computer via USB port Support Micro SD card up to 32GB (Micro SD card not included) A LED 'Over-speed' alerting light to control scanning speed Scanning Resolution up to 900 DPI, 900/600/300 dpi