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This is a USB plug with switch, when the arrow into green, can charge their phone.Red, can connect mobile phone enable usb function.Subtract operation trouble on your phone
BeihuaUniversity
Jilin, China
Maohan Zhang,Xu Wang,Xin Li,Jiaxu Wang,
BeihuaUniversity,Department Of Product Design,Kun Yue,Huawei Liu
BeihuaUniversity
Jilin, China
Maohan Zhang,
BeihuaUniversity
