HP Scanjet Pro 4000 snw1 Sheet-feed Scanner (6FW08A) - Scanner type: Sheetfed, Scan resolution, optical: Up to 600 dpi, Automatic document feeder scan speed: Up to 40 ppm / 80 ipm, Duplex ADF scanning, Connectivity: Ethernet 10/100 Base-T, USB 3.0, Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Automatic document feeder capacity: Standard, 50 sheets, Display: Resistive, RGB colour and 7.1 cm (2.8 in) touch panel with a resolution of 140 dpi (240 x 320 dots).