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最近有个项目，要得到5V，3A的电源，大概看了下资料，好像>25W的POE芯片都需要两个网口？请问有单网口的大功率的POE芯片吗？
您的意思是要提供15W，必须要双网口吗？还是说只要PSE单网口能提供15W，PD端就能用单网口？
