Features - Shielded DC Jacks, Compliant with IEEE 802.3 bt Standard, Limited Power Source, Compliant with Phihong Proprietary 12.5K Detection, Single Source 4 Pair Power Current Sharing, Non-Vented Case, Broken Wire Detection, 4 Pair Powering +3, 6, 4, 5 / - 1, 2, 7, 8, Gigabit Compatible, Full Protection OVP, OCP, 1 Year Warranty