Plustek SmartOffice PS456U80/160 PPM/IPM duplex scanner (PLS-783064425667)Plustek SmartOffice PS456U 80 160 PPM IPM duplex scanner (PLS 783064425667) 600 x 600 dpi Resolution Automatic Document Feeder: 100 Sheets 80 ppm 160 ipm Grayscale Mode at 300 dpi 45 ppm 90 ipm Color Mode at 200 dpi The Plustek SmartOffice PS456U Scanner provides batch scanning at speeds of up to 80 pages per minute, or 160 images per minute in grayscale mode at 300 dpi. It features an optical resolution of 600 dpi and can hold up to 100 sheets of A4