本项目的范围是使用4对电源和相关电源管理信息来增强IEEE Std 802.3标准的能力。该项目将增强通过平衡布线向具有802.3接口的连接数据终端设备供电的方法。某些结构化布线系统将提供可选的增强功率限制。为4线对系统引入的改进（不包括提高功率限制）可选择为2线对系统启用。将保持与现有设备的兼容性。

The scope of this project is to augment the capabilities of the IEEE Std 802.3 standard with 4-pair power and associated power management information. The project will augment the methodology for the provision of power via balanced cabling to connected Data Terminal Equipment with 802.3 interfaces. Optional augmented power limit will be made available for certain structured cabling systems. Improvements introduced for 4-pair systems, excluding raising the power limit, are optionally enabled for 2-pair systems. Compatibility with existing equipment will be maintained.