Complies with the IEEE 802.3, IEEE 802.3u and IEEE 802.3ab Ethernet standards. 48-port RJ45: 24-port 10/100/1000Mbps “Data input”. 24-port 10/100/1000Mbps “Data + Power output”. One 10/100/1000BASE-T management port. Ultra Power over Ethernet end-span/mid-span PSE. Up to 60 watts of power on 4-pair UTP. Backward compatible with IEEE 802.3at/af PD device. Maximum of 54V DC, 60-watt PoE power output on each port. 800-watt PoE budget. Auto-detection of IEEE 802.3at/af PoE equipment and device to avoid possible damage by incorrect installation. Circuit protection prevents power interference between ports. Remote power feeding up to 100m.