... Touch Screen Open Frame Touch Accuracy:1.5mm USB Port/RS232, Plug Play, No Drive Long Life ... typeTransmission speed12MbpsSignal+5V, D-, D+, GNDConnectorUSB A Port connector for cableTemperature RangeOperating -40°C~70°CStorage ... non condensingPower SupplyDC 5V ± 5%, 270mA~290mACommunication InterfaceUSB Port or RS232 (Plug & Play, No Drive) Communication ... systems Waterproof Open Frame With USB Power