Vupoint Solutions PDS-ST470-VP 600 dpi USB Color Portable Scanner Scanning Speed: Minimum scanning speed for Letter size document: Color High resolution: 12.0 Seconds Mono High resolution: 10.0 Seconds Color Medium resolution: 8.0 Seconds Mono Medium resolution: 6.0 Seconds Color Low resolution: 3.0 Seconds Mono Low resolution: 2.0 Seconds Max. Document Size: Scan width Approx. 8.5 Scan length 300DPI: 125 (max);600DPI: 60;(max);1050DPI: 50 (max) USB Ports: USB 2.0 High speed Power Consumption: approx. = 400 scans by lithium polymer with 300 DPI setting (quantity varies per use) Power Requirements: 700 mAh Rechargeable battery Operating Systems Supported: Windows XP, Windows Vista, Windows 7, Windows 8, Mac OS 10.4 or above (direct plug-in, no driver installation) Dimensions: Approx 10.50 x 1.10 x 1.50