... rotate, zoom in/out 2.Withstands severe environments 3.Stable, no-drif 2,4,6,10,16,32 points 32 ... not included): external AC-DC power adaptorInterfaceFull Duplex USB 2.0 (Full Speed) Plug and play compatibleSerial RS ... kV air / 8 kV contact discharges (EN61000-4-2,1995 :Level 4)ControllerIntegration inside touch panelAgency ApprovalsCE, ... Linux/ Dos / Windows 7/XP//Mac OS 2,4,6,10,16,32 points 32/42/52/55 ...