Additional Details ------------------------------ Product description: Ds-530 Ii Color Duplex Document Scanner, 600 Dpi Optical Resolution, 50-Sheet Duplex Auto Document FeederIncludes Advance Exchange with free Next-Business-Day Replacement to minimize downtime.Seamless compatibility with most document management systems—includes TWAIN and ISIS drivers for easy integration with existing software.Features blank page removal, auto-rotation, auto cropping, Dynamic Skew Correction, Dirt Detection, Double-feed Detection and Paper Protection.