... networks Metro network,Local Area Network (LAN) Date processing networks D4 Fiber optic connectorsInsertion Loss <=0.20dB(SM) <=0.25dB(MM ... )Return Loss >=55dB (PC) D4 fiber optic connectorCompliant with TIA-568-B.3 performance requirementsTerminable ... 0.9mmConnectors type: SC, ST, FC, MTRJ, LC, E2000, MU....... D4 fiber optic connector