Product UPC: 014445423829 This Cisco ONS-SI-155-L2 compatible OC-3/STM-1 LR-2 SFP Transceiver operates at 1550nm over Single-Mode Fiber, with a maximum reach of 80km connected via a LC connector, built to meet or exceed the OEM's specifications, and comply with MSA (Multi-Source Agreement) standards. All products are 100% functionally tested, and are guaranteed compatible. Our Transceivers (GBIC, SFP, SFP+, X2, XFP and XENPAK) are 100% compliant with their designed networking application, and are factory programed with specific con...