... calibration,natural writing,muti users,infarad The i-Interactor DG-100 consists of i-cam, i-pen, USB cable, user manual, driver ... certain place if necessary. i-Interactor interactive boardOther brands board Positioning accuracy, The writing error rates within ±0.05mm (±0 ... RequirementOSWindows XP/VISTA/2007CPUIntel P4-1.0GRAM128MHard Disk50M i-Interactor,i-Pen,i-Cam,iwb portable interactive white board