... 19V 4.74A 7.4*5.0 dc connector universal universal laptop ac adapter AC input voltage rangeOutput voltageOutput currentRated output ... .74A90W85%180mV24V2A48W87%240mV Use IC solutions, very low standby power consumption, heat a small, high stability,Short circuit protection ... . Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator, low ripple ...