30 x 36 GTCO Roll-Up III Portable Digitizer Tablet and Crystal Takeoff Software - Includes Corded Pointing Device, Shipping Tube, Drivers, Manual, and all Necessary Cables. Native USB Connection (no power supply required) Serial Kit Required if Connecting to a Computer Serial Port. Works with QuikRuler Module (no computer required) or Digitizer Software and a Computer. Footprint 38 in. x 44 in. Weight 6 lbs. Compatible with Windows 95/98/XP/Vista/7.