Type : HP Scanjet 8270 Model : L1975A Scan Type : Flatbed A4 Scan Resolution : Up tp 4800 dpi Bit Depth : 48-bit Scaling : 10 to 2000% in 1% increments Preview Speed : Up to 4 sec Features : Automatic document feeder: 50 sheets/25ppm Scan Speed : Up to 12 ppm; 10x15cm color photo into Microsoft Word: less than 25 sec; OCR a full page of text into MS Word: less than 33 sec; email photo: less than 32 sec Adapter : Built-in Transparent Materials Adapter-TMA; 2x35mm slides or 3x35mm negative frames Interface : Hi-Speed USB - compatible with USB 2.0 specifications