StarTech.com MSA Uncoded Compatible SFP Module, 1000BASE-LH, 1GbE Single Mode (SMF) Fiber Optic Transceiver, 1GE Gigabit Ethernet SFP, LC Connector, 40km, 1310nm, DDM, Mini GBIC Module

Lifetime Warranty (SFP1000LHST) - SFP (mini-GBIC) transceiver module - 1GbE - 1000Base-LH - LC single-mode - up to 40 km - 1310 nm