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freeliver
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我设计一个USB设备,最大电流为500mA,正常为300mA。现在,我面对proble:我的设备可以在PC和笔记本电脑很多,但在一些笔记本它does't工作。最新笔记本电脑的USB接口特殊?我看到笔记本configration该端口为500mA。
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