1.Design power adapter,DC 5V2000mA 2.Precise design performance, OVP,OCP,SCP,Surge vol ... 1.Design and manufacture PC+ABS material power adapters.2.DC 5V2A constant voltage supply, PC+ABS material.3 ... 9.Overall quality reliability test such as loading output,no-loading output,full load efficiency,noise data,short circuit protection ... Power Switching Efficiency: >83%.11.Load/no-load output tolerance:3%