... 5v 9v 12v 24V switching ac/dc power adapters 1.LED light power 2.Best sales service 3 ... Assembly full inspection: to make sure every unit with power ,without low voltage, without bad led indicator ... , low ripple, good appearance, with right cables, etc4. Full inspection after burn-in ... low voltage, no bad led indicator, low ripple, with right cables , no bad ultrasonic bonding, etc6. ...