Power Over Ethernet (POE) is a way to power the Pi 4 using its ethernet port, making it easier to supply power and network connectivity through a single cable.
Does Raspberry Pi 4 have PoE?
Specification. The Raspberry Pi PoE HAT is an add-on board for the Raspberry Pi 4 Model B and the Raspberry Pi 3 Model B+. It allows the Raspberry Pi to be powered via a power-enabled Ethernet network.
Can you power Raspberry Pi via PoE?
When the Raspberry Pi 3 Model B+ was announced in March of 2018, one of its new features was the ability to be (more easily) powered via Power-over-Ethernet (PoE), with an official PoE HAT for the low price of just twenty-one USA bucks.