Plustek OptiCard 821. Maximum scan size: 104.9 x 148 mm, Scanner type: Sheet-fed, Optical scanning resolution: 600 x 600 DPI. Standard interfaces: USB 2.0. Scan drivers: TWAIN. Width: 174.5 mm, Depth: 60.5 mm, Height: 38.5 mm. Power consumption (typical): 2.5 W