Plustek PS283. Maximum scan size: 216 x 356 mm, Scanner type: flatbed & ADF, Optical scanning resolution: 600 x 600 DPI. Standard interfaces: USB 2.0. Width: 263 mm, Depth: 127.5 mm, Height: 148 mm. Power consumption (typical): 18 W, Input voltage: 24 V, Power supply type: DC. Minimum hard disk space: 800 MB, Minimum RAM: 1024 MB, Minimum processor: Pentium 4 2.0 GHz