http://www.avision.com/usa/products/av121.html

AV121 Specifications
Document feeding mode  Sheetfed scanner, Simplex
Technology  CCD image sensor
Optical Resolution  600 dpi
Halftone Patterns  Error Diffusion
Grayscale mode: 8 bits
Color mode: 24 bits
Color depth: 24 bits
Paper Size  ADF minimum: 2.5" x 2" (63mm x 50mm)
ADF maximum: 8.5" x 14") (215mm x 355mm)
Scanning Speed  15 PPM (A4@200 dpi, B/W)
Interface  USB2.0
Light Source  CCFL
Power Source  Input: 100-240V, AC, 50/60 Hz
Output: 24V, DC, 1.25A
Power Consumption  less than 30W
Dimensions  5.4" x 12" x 5.9" (Without tray)
138mm x 305mm x 152mm (Without tray)
Weight  6.1lb (2.8kg)