Document scanner feeder scanner a3 scanner scan technology cis scan format a3 supported document size 307 x 2540 mm scan resolution 600 dpi interface usb 30 max scan speed 100 pagesmin automatic document feed 300 sheets document feeder automatic functions duplex scanning ultrasonic double feed detection controls 3 scan buttons compatible operating systems windows 8 windows 7 windows vista windows xp windows 81 windows 81 windows 8 windows 8 windo