Document scanner flat bed scanner feeder scanner scan technology ccd scan format a4 supported document size 216 x 297 mm scan resolution 1 200 dpi interface usb 20 position of connectivity ports 1x usb rear max scan speed 15 pagesmin automatic document feed 50 sheets document feeder automatic colour depth 48 bit opening angle 90 backwards scan documents documents controls 5 scan buttons power supply ac adapter power consumption in use 24 watt