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 scan documents documents light source led functions duplex scanning controls scan buttons power supply ac adapter power consumption in use 75 watt colours gray black width 432 mm depth 371 mm height 257 mm dimensions