AMC Optics 10GBASE-LR SFP+ SMF 1310nm 10km DDM Transceiver is guaranteed 100% Compatible and Functional in its intended router or switch , and it is 100% MSA compliant. Every SFP+ LR transceiver is environmentally tested in its specific port/platform, which includes compliance verification for distance, wavelength, traffic density and light. E10GSFPLR-AMC