Document scanner feeder scanner scan technology cis scan format a4 supported document size 216 x 2540 mm scan resolution 600 dpi interface usb 20 max scan speed 20 pagesmin automatic document feed 50 sheets document feeder automatic controls scan buttons compatible operating systems windows 8 windows 7 windows vista windows xp windows 81 windows 81 windows 8 windows 8 windows 10 power consumption in use 17 watt colours black gray software inc