SC/UPC SM fiber optic connector 2.0 SC,LC,ST,FC,MU fiber optic connector APC,UPC,PC,SM,MM Simplex,duplex fiber ... connector kit SC/UPC SM fiber optic connector 2.0 Single modemulti mode Insertion loss ≤0.2dB ≤0.3dB Return Loss ... ≤1.0127.0um,concentricity≤3.0126.0+1/-0um,concentricity≤1.0128.0um,concentricity≤3.0 The connector pre-assemblied kit or one ...