... test 2.over current ,short-circuit protection 3.Warranty:2 years 3 pin plug 5v 2a 9v1 ... products full inspection: to make sure no cold solder ,lack of components, no tin dross, no ... led indicator, low ripple, good appearance, with right cables, etcFull inspection after burn-in: to make ... voltage, no bad led indicator, low ripple, with right cables , no bad ultrasonic bonding, etcVisual full inspection ...