PoE Texas has announced the GBT-NUC, a new type of lid for certain Intel mini PCs that enables them to access power and data through just 1 Ethernet cable. Therefore, the devices can function independently of a conventional wall-plug, and may make them into more versatile office computers, display controllers or media-centers.
https://www.notebookcheck.net/Power-over-Ethernet-on-some-Intel-NUCs-is-now-possible.448097.0.html