The MikroTik GPEN11 is a PoE power injector that can be mounted on a wall to power your uplink devices with PoE power. 

The GPEN11 is part of the GPEN (Gigabit Passive Ethernet Network) concept, which aims to replace GPON (Gigabit Passive Optical Network) installations with lower cost and more easy to deploy Ethernet alternative.

It also has a designated space for an ISP or WISP operator sticker on the front.