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 120 pagesmin automatic document feed 75 sheets document feeder automatic colour depth 24 bit light source led functions duplex scanning compatible operating systems windows 8 windows 7 windows vista windows xp windows 81 windows 81 windows 8 windows 8 windows 10 colour gray software