E-Marker芯片
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USB-C线缆中的嵌入式芯片，用于传达线缆的功率和数据能力。
功率超过60W或支持高于USB 2.0速度的USB-C线缆都需要E-marker芯片。该芯片告诉充电器和设备线缆能安全承受的能力，防止过热。没有e-marker的廉价线缆可能将功率限制在60W。