... adapter (aka flange), also known as the optical fiber connector, the connector on the optical activity is connected components. Series products include: FC ... -ST,FC-ST, FC-SC, FC-LC, FC-MUMTRJE2000ModeSingle-Mode (SM)Multi-Mode (MM)SMMMSMPCUPCAPCPCPCUPCPCPCAPCInsertion Loss(dB)≤0.3≤0.2≤0 ... adapter connection loss less than 0.2 db 2: Simplex mode generally used in the transfer of data in one direction ...