Document scanner flat bed scanner feeder scanner scan technology ccd scan format a4 supported document size 216 x 297 mm scan resolution 600 dpi interface usb 20 position of connectivity ports 1x usb rear max scan speed 8 pagesmin automatic document feed 50 sheets document feeder automatic colour depth 48 bit opening angle 90 backwards scan documents photos documents business cards light source white cold cathode tube controls 5 scan buttons co