The Black Box LPJ016A-T-R2 is a RJ45 POE Gigabit Ethernet Injector - 802.3at with 16-Ports. PoE+ midspan injectors are used in Enterprise applications to power VoIP phones, wireless access points, IP security cameras and more. PoE+ injectors add power to the Ethernet link and will help you avoid upgrading non-PoE switch infrastructure. PoE enables you to avoid installing AC power at a remote powered device.