for PoE devices that provide up to 15.4 W of power per port. Products that comply with IEEE 802.3at provide more than 15.4 W of power pert port, and are referred to as PoE+ devices. Advantages of PoE ...

In 2009, the IEEE 802.3 working group released the second PoE standard, IEEE 802.3at. This added a power class that could deliver up to 25.5 W, allowing for pan and tilt cameras to use the technology.

This eliminates the need for separate power cables, reducing wire costs and simplifying troubleshooting. Like other PoE products, PoE injectors comply with IEEE 802.3af, a power distribution standard ...