... 2.over current ,short-circuit protection 3.Warranty:2 years 3 pin plug 5v 2a 9v1.5a 12v ... Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led ... indicator, low ripple, good appearance, with right cables, etcFull inspection after burn-in: to ... low voltage, no bad led indicator, low ripple, with right cables , no bad ultrasonic bonding, etcVisual full ...