HP L2747A Scanjet Pro, Scanner Type Flatbed, ADF, Output Resolution 75, 150, 200, 240, 300, 400, 500, 600, 1200 dpi, Hardware Resolution Flatbed 1200 x 1200 dpi ADF: 600 x 600 dpi, Grayscale 256 levels, Scan Speed 20 ppm / 40 ipm, Daily 1,500 pages (ADF), Interface USB 2.0, Processor 120 MHz, Memory 64 MB, O/S Windows 10, 8.1, 8, 7 Mac OS X 10.9, 10.10. When you need to digitize your workflow simply and reliably the HP is a great tool for the job. It scans documents using either an 8.5 x 11.7" flatbed or a versatile and speedy automatic document feed