Document scanner feeder scanner scan technology cis scan format a4 supported document size 216 x 356 mm scan resolution 600 dpi interface usb 20 max scan speed 25 pagesmin automatic document feed 50 sheets document feeder automatic scan documents documents business cards controls 3 scan buttons power supply ac adapter colour gray max duty cycle 1500 scans software included hotcard bizcard finder 30 abbyy finereader plustek di capture plustek d