Document scanner a3 scanner feeder scanner scan technology cis scan format a3 supported document size 297 x 432 mm scan resolution 200 dpi interface usb 20 max scan speed 100 pagesmin automatic document feed 250 sheets document feeder automatic colour depth 24 bit scan documents documents light source white cold cathode tube controls 9 scan buttons power supply ac adapter power consumption in use 150 watt colours gray blue software included k