What is it - A 5v UCTRONICS PoE splitter to split the PoE signal into micro USB power supply and Ethernet in RJ45, so that non-PoE devices can be powered over Ethernet. Reportedly used on micro USB devices like Raspberry Pi, Amazon Ethernet Adapter for Fire TV, Amazon Cloud Cam, Echo Dot (2nd Gen), Wyze Cam v2, Arlo 2 Pro, ASUS Tinker Board, Nano Pi, Chromecast, and so on | What is PoE - PoE enables you to deliver power and data with a single Ethernet cable, and thus fewer wall plugs are needed and fewer cables are messed. It also helps you extend powerline to where there are no AC outlets nearby but your Ethernet cable can reach, up to 300 feet away from the power source | What’s special about it - PoE to Micro USB. That means it adds plug-and-play PoE support to Raspberry Pi models even they are not 3 B+ and cannot accommodate a Raspberry Pi PoE HAT. It makes full use of PoE switches because the other end of the PoE port could be any micro USB devices instead of a 48V PoE network device | What else is needed - You need an IEEE 802.3af compliant PoE switch or injector to serve as the PSE (Power Source Equipment,) an Ethernet cable with the proper length you need, and devices powered via micro USB. These are not included in our package | Note - 1: Just put the split Ethernet aside if you don’t need the data. 2: For one pack, check B01MDLUSE7; For gigabit PoE switch or a Raspberry Pi 3 B+, check Gigabit PoE splitter B07CNKX14C; For 12V barrel port, check B01MPWW2UV. 3: The Split Ethernet cable does not carry power, but you can add a USB Ethernet adapter to it if your device takes network from USB