2026 RJ45和POE引脚详解
在当今的网络世界里面，我们每个人都被连接着，然后最基本的RJ45接口（俗称水晶头）的引脚定义，也许是需要做工程或解决问题是的必查手册。然而建立在RJ45之上POE协议也在视频监视，设备供电等应用中经常使用到。本文简单总结了RJ45接口和POE规范中的不同引脚定义，以方便各位工程师查询。
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