... fast Ethernet standards.2 Compliance IEEE802.3at for POE3 48 ports of half duplex /full duplex self -adapting ... fast EthernetIEEE802.3at POEProtocolCSMA/CD EthernetData Transmit RateEthernet: 10/100/1000MbpsTopology StructureStar topologyPhysical Medium10BASE-T:CAT3,4,5 UTP ... ports as data and power transfer)TX / RXAny of 48 portsLED DisplayPower ,UPLINK, Error, ACTIVE ,PSE powerTransfer ModeStorage ...