... DefinitionX, Y, X, YPanel Resistance200 ~ 900 ohm (pin to pin on the same layer)Software Features CalibrationFast Full oriental 4 ... 320x200, 640x200, 640x350, 640x480, 800x600, 1024x768 and 1280x1024 5.iMac 9.0/ OS XCOM Port Support1. Support COM1~COM256 ... monitors3. Support split monitor Resistive touch screen Controller (5-wire) Resistive Touch Control Boards(TouchKit 5 or 4-Wire RS232 Controller