What is the maximum power that the PoE+ standard (802.3at) can supply?

The PoE+ standard, known as IEEE 802.3at, is designed to provide power over an Ethernet cable and can deliver up to a maximum of 30 watts to powered devices. This is an improvement over the earlier PoE standard (IEEE 802.3af), which can supply up to 15.4 watts.

The 30W power delivery capability of PoE+ is particularly important for devices that require more power, such as IP cameras, wireless access points, and VoIP phones, allowing them to operate effectively without needing a separate power source. This higher power output accommodates devices that have higher power demands while ensuring efficient use of infrastructure by delivering both data and power over the same cable.

Understanding the power capabilities of PoE standards is crucial for determining compatible devices in a network installation or upgrade scenario.