... circuit, overload protection 3.CE,FCC,ROHS E.U. plug 12W AC/DC desktop adapter with CE ... no bad led indicator ,no high voltage, no low voltage, no output, etc 3. Assembly full inspection: ... sure every unit with power ,without low voltage, without bad led indicator, low ripple, good appearance, with right cables ... power ,no bomb unit, no high voltage, no low voltage, no bad led indicator, etc 5. Finished ...