... display surface Free of false touch reportsElectricalOperation VoltageTypical +DC 5V, +4.75V to +5.25VPower ... ”(include 52”)USB or PS/2 Interface, power ripple max.200mV rmsSize above 52”(52” not ... included): external AC-DC power adaptorInterfaceFull Duplex USB 2.0 (Full Speed) ... 8 Data Bits, 1 Stop Bit, No Parity Power<1.5W, operating current<300mAElectrostatic Protection15 kV air / ...