HP Scanjet Pro 3000 S3 Sheet-feed Scanner is built on Up to 600 dpi (color and mono, Sheet-feed) resolution which Quickly and reliably digitize larger projects with scan speeds  up to 35 ppm/70 ipm and a 50 sheets ADF and Recommended for 3,500 pages per day. This printer is load up to 50 pages into the automatic document feeder for fast, unattended scanning. You can Easily transfer scans into editable text, secure PDF files, and more file types, using built-in OCR and Scan images directly into applications with included and full-featured TWAIN and ISIS. Its ADF specifications are Automatic document feeder capacity is 50 sheets , Automatic document feeder speed is Up to 35 ppm/70 ipm , Scan size (ADF), maximum 216 x 3100 mm maximum Scan size (ADF), minimum 50.8 x 74 mm Scan size (ADF).Here include USB 2.0 (Hi-Speed) and USB 3.0 connectivity. In this exclusive scanner , the power and operating requirements are Voltage Input Voltage range is 90 - 264 VAC , Rated Frequency is 50/60HZ, Worldwide use Power consumption is 4.2 watts (ready), 0.7 watts (sleep), 0.1 watts (off), 0.1 watts (auto-off) 2 ,efficiency ENERGY STAR certified; CECP; EPEAT (Silver), Operating temperature range is 10 to 35ºC, Recommended operating humidity range is 15 to 80% RH (non-condensing).This scanner Levels of grayscale is 256.You can Define scan profiles for common document types, and scan to multiple destinations with HP Scan software.