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 30 pagesmin automatic document feed 50 sheets document feeder automatic functions duplex scanning 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 colour