8FastEthernetports+4SFPportsSFPsocketforEasyandFlexibleFiberExpansionRedundancy:X-RingPro(ultrahigh-speedrecoverytime<20ms),RSTP/STP(802.1w/1D)IXMfunctionenablesfastdeploymentSecurity:802.1x(Port-Based,MD5/TLS/TTLS/PEAPEncryption),RADIUSManagement:SNMPv1/v2c/v3,WEB,Telnet,StandardMIB,PrivateMIBNEMATS2forTrafficControlEN50121-4approvalforRailwaytracksidedeployment-40~75°Cwide-rangeoperatingtemperature(EKI-7712E-4FI)Dual12~48VDCpowerinputand1relayoutput)