SMAKN&reg; Passive PoE injector power over ethernet with 2.1mm x 5.5mm DC connector Power over Ethernet injector, 1 port wall mount, 2.1mm x 5.5mm DC connector Use any power supply up to 60 volts, use as injector or splitter Use with IP security cameras, wireless access points, IP Phones and other devices see also our kits with power supplies, 8, 12 and 16 port versions, and gigabit 3-year warranty