The Gigabit PoE injector is used to power most RouteBOARDs or Ubiquiti devices supports passive PoE. This type comes with a standard size 2.1/5.5mm power connector. The PoE injector does not work with 802.3af standard and powering devices on pins 4.5 (+) and 7.8 (-).
The spacing of the holes for installation on a base or wall is 67mm.