OS2 - Singlemode (9/125) - 12 Fiber MTP (female) to LC Duplex Cassette, LoadedFeatures: Standard LGX footprint LC SC ST MTRJ connectors optional on front side Customized fiber polarity in the module Modular system management, easy reconfiguration for moves, adds, and changes Specifications: Fiber Mode: single mode 9 125um Fiber Insertion Loss: 0. 25 dB typical (all fibers); 0. 75 dB maximum (single fiber) Optical Return Loss: > 55 dB (8 angle polish) Durability: < 0. 3 dB change (per EIA 455 21A), 500 remates