... ROHS&FCC 19V 5.5*2.5 dc connector universal laptop notebook ac power adapter OEM& ODM are welcomed Specification: 19V 5.5*2.5 dc connector ... etc 3. Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator, low ripple ... inspection after burn-in: to make sure every unit with high temperature resistance, with power ,no bomb unit, no high voltage, ...