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 maximum scan size 304.8 X 431.8 Mm optical scanning resolution 800 x 800 dpi colour scanning yes duplex scanning yes input colour depth 48 bit input greyscale depth 16 bit output colour depth 24 bit output greyscale depth 8 bit output monochrome depth 1 bit film scanning no flatbed scan speed b w, a3 7.8 Sec page black white scanning colour modes grayscale, monochrome design scanner type flatbed scanner built-in display no product colour white performance sensor type ccd daily duty cycle max 2500 pages scan drivers twain paper handling maximum iso a-series paper size a3 ports & interfaces usb port yes usb version 2.0 Network supported network protocols twain compliant power power co...