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When using the notebook computer or appliance at the public place or home, there is always a situation that pulls out the wrong plug while it is used. It may possibly can create the cause the damage of computer or appliance. If there has a design on the plug or socked, can easily identified, that the situation will be avoid.
Chang Gung University
Chang Gung University, Department of Industrial Design
Kwei-San, Tao-Yuan, Taiwan