Plustek SmartOffice PT2160 Document Scanner, High-Speed Duplex Scanner with 100-Sheet ADF, 60ppm/120ipm, Ultrasonic Double-Feed Detection, USB 3.0, Windows & Mac CompatibleProduct Highlights High speed duplex document scanner with 100 sheet Automatic Document Feeder (ADF) Scanning speed up to 60 pages per minute 120 images per minute 600 dpi optical resolution for sharp and detailed image quality Ultrasonic double feed detection ensures reliable paper handling Supports a wide range of paper sizes and thicknesses for versatile scanning Daily duty cycle designed for heavy office workloads USB 3. 0 connectivity for fast