This Visioneer One Touch 9120 Scanner is a high-quality flatbed scanner that offers a maximum resolution of 1200 x 2400 DPI. It comes with a USB 2.0 connectivity option and supports paper sizes of A4 (210 x 297 mm). The scanner features a CCD image sensor and laser technology for efficient and accurate scanning. In addition, this scanner offers a range of features, including scanning resolution of 4800x2400 DPI, Grayscale Depth of 48 Bit, and Color Depth of 48 Bit. With 256 MB of memory, this unit is capable of handling large scanning projects with ease. Whether you\'re a student, professional, or hobbyist, this Visioneer scanner is a great investment for your scanning needs.