this Cisco Glc-lh-smd Compatible Sfp Transceiver Provides 1000base-lx Throughput Up To 10km Over Single-mode Fiber (smf) At A Wavelength Of 1310nm Using A Lc Connector. It Is Guaranteed To Be 100% Compatible With The Equivalent Cisco Transceiver. This Easy To Install, Hot Swappable Transceiver Has Been Programmed, Uniquely Serialized And Data-traffic And Application Tested To Ensure That It Will Initialize And Perform Identically. Digital Optical Monitoring (dom) Support Is Also Present To Allow Access To Real-time Operating Parameters. All Of Our Transceivers Are Trade Agreements Act (taa) Compliant. We Stand Behind The Quality Of Our Products And Proudly Offer A Limited Lifetime Warranty.compatible With Cisco Glc-lh-smd1000base Lx Sfp(smf, 10km, Lc, 1310nm)