PoE Injector, Gigabit Ethernet The LevelOne POI-3014 is a Power-over-Ethernet (PoE) injector that not only offers a cost-effective solution for power distribution but also provides a seamless way to power powered devices (PDs) within an existing LAN infrastructure. When using Powerover-Ethernet injectors, DC power of up to 30 W and the data coming from a non-PoE switch are combined and then transmitted via the Ethernet cabling to a PD, such as a PoE network camera.