Scanner type: Flatbed scanner 800 x 800 DPI Colour scanning Duplex scanning A3 Maximum scan size: 304.8 x 431.8 mm Sensor type: CCD USB port Power supply type: AC 30 W OpticPro A320EHigh-performance A3 flatbed for capturing large bound or fragile documentsEnjoy a seamless scanning operation with Plustek OpticPro A320E providing greater versatility and precision when scanning journals, fragile documents and books.Accurate color and high dynamic rangeA320E offers higher performance of depth of field, scan artworks with detailTWAIN compliantIndustry standard TWAIN drivers ensure compatibility with thousands of image enabled applications including document management, document capture, enterprise content management, forms processing, photographic imaging and image management applications. Scanning Black/white scanning colour modes Grayscale, Monochrome Flatbed scan speed (b/w, A3) 7.8 sec/page Film scanning No Output monochrome depth 1 bit Output greyscale depth 8 bit Output colour depth 2