This HP ScanJet Pro 3000 s4 Duplex Color Document Scanner is a high-quality device that supports scanning sizes from A4 to A6. With a maximum resolution of 600 x 600 DPI and an image sensor of Contact Image Sensor (CIS), it ensures accurate and efficient scanning. The scanner features duplex technology and connectivity options of USB 3.0 and USB 2.0. In addition, it is compliant with California Prop 65 and does not contain any chemicals or materials specified in the list. The HP ScanJet Pro 3000 s4 is a reliable and durable scanner that is perfect for businesses and individuals alike.