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When we use a U disk in darkness,it may be difficult for us to find the USB
interface exactly.so it is quite unconvenient ,in order to solve this problem,we
desined the U-light.When use it in darkness , just turn on the light and make
sure the side is right ,then insert it into USB interface ,in the meanwhile,the
light turns off and begins to charge.
Zhao Hongshen Xu Haotian