XEROX DocuMate 5540 (100N03033) 8-bit (256 grey levels) / 24-bit (16.7 million colors) Dual CCD 600 dpi Flatbed and Sheetfed Document Scanner Light Source: White LED Scanning Speed: 40 ppm (mono) / 40 ppm (color) Max. Document Size: 8.5 x 11.7 Media Type: Plain paper Automatic Document Feeder (ADF): Yes ADF Capacity: 70 sheets USB Ports: USB 2.0 Operating Systems Supported: Microsoft Windows XP, Microsoft Windows 7, Microsoft Windows Vista, Windows 8