Plustek OpticFilm 135 Up to 3600 dpi USB color Photo Specialized Scanners Light Source: LED Scanning Speed: Approx. 40 seconds for maximun scanning area color at 600 dpi Approx. 205 seconds for maximun scanning area color at 3600 dpi Max. Document Size: 1.37 x 8.9 USB Ports: USB 2.0 Power Requirements: 24 V DC / 0.75 A Operating Systems Supported: Windows 7 / 8 / 10 Mac OS X 10.8.x/ 10.9.x/ 10.10.x/ 10.11.x Dimensions: 6.90 x 10.20 x 4.10 Weight: 3.49 lbs.