LC Fiber optic patch cord 1.IL<=0.2dB,RL>=55dB 2.Connector:FC,SC,LC,ST,E2000,MU,etc ... or jumpter , only one end with the connector be named pigtail. SC stands for Subscriber Connector- a general purpose push/pull ... system Telecommunication Specification:ParameterUnitFC, SC, LC/ Armoured fiber patch cordST, MUMT-RJ, MPOE2000SMMMSMMMSMMMSMPCUPCAPCPCPCUPCPCPCUPCPCPCAPCInsertion loss(typical)dB≤0.3 ...