power adapter: 1.Factory selling, punctual delivery 2.Short circuit, overload protection 3.CE,FCC,ROHS USA plug 12V 1A ... error, voltage regulation factor and current adjust rate Suggested application : digital cameral,video game player or small power electrical equipment; CD, DVD ... solder ,lack of components, no tin dross, no short-circuit, no open circuit, no bad led indicator ,no high voltage, no low ...