... internal memory, up to 32G external micro SD card. USB Mini portable scanners Key Features 1.1 Color / ... micro SD card.1.5 No need driver, USB connect to PC to copy the files.1.6 ... may scan and access the memory/SD card.n When USB linking, keeping click “DPI” button 3 seconds, ... ” button, LED twinkle quickly, waiting for scanningn Slide the scanner, blue light twinkle slowly, the icon “S—” display on ...