Portable A4 duplex scanner - Resolution: 600 dpi - Up to 15 ppm (simplex) or 30 ipm (duplex) - Interface: USB - Feeder capacity 20 sheets - Recommended scan volume: 500 scans per day - USB cable included We recommend: Buy this qualifying Canon printer and benefit from Canon's 3-year warranty promotion with an additional 1-year bring-in service extension for additional peace of mind. Register your device within 30 days of purchase on the manufacturer's website, where you can also find terms and conditions for the promotion.