... 7.4*5.0 dc connector universal universal laptop ac adapter AC input voltage rangeOutput voltageOutput currentRated output powerEfficiencyRipple / Noise100 ... solutions, very low standby power consumption, heat a small, high stability,Short circuit protection. overheat protection. all by the 100 ... -circuit, no open circuit, no bad led indicator ,no high voltage, no low voltage, no output, etc 3. Assembly ...