Ds920dw Wireless Mobile Scanner With Duplex, 600 X 600 Dpi Scanning Speed: Up to 8ppm (LTR at 300dpi) (color and mono) (Typ.) Up to 5ppm (LTR at 300dpi) (color and mono) (Duplex) Max. Document Size: 8.5 x 32 USB Ports: Yes Other Ports: Wireless 802.11 b/g/n Power Consumption: Approx. 2.5W (Scanning) Approx. 1.0W (Ready Mode) Operating Systems Supported: Windows: Windows 8, Windows 7, Windows Vista, Windows XP (Home & Professional) Mac: Mac OS X v10.6.x, v10.7.x, v10.8.x Linux Dimensions: 1.60 x 12.10 x 2.60 Weight: 1.17 lbs.