Xerox DocuMate 250. Maximum scan size: 216 x 356 mm, Scanner type: Sheet-fed, Sensor type: CCD. Auto document feeder (ADF) input capacity: 50 sheets. Standard interfaces: USB 2.0. Weight: 3.69 kg. Minimum system requirements: DVD-ROM, USB, Minimum hard disk space: 350 MB, Minimum RAM: 512 MB