Document scanner scan technology ccd supported document size 305 x 4000 mm scan resolution 600 dpi interface usb 30 max scan speed 50 pagesmin automatic document feed 250 sheets document feeder manual colour depth 48 bit light source led functions duplex scanning controls scan buttons compatible operating systems windows 8 windows vista windows xp windows 81 windows 8 power consumption in use 75 watt colour gray width 432 mm depth 371 mm