Visioneer OneTouch 9520. Maximum scan size: 216 x 287 mm, Scanner type: Flatbed, Enhanced scan resolution: 3200 x 3200 DPI. Standard interfaces: USB 2.0. Weight: 2640 g. Minimum hard disk space: 200 MB, Minimum RAM: 512 MB, Minimum processor: Pentium III. ISO A-series sizes (A0...A9): A4