StarTech.com SFPG1580C is a Gigabit 1550nm GBIC SM LC Fiber SFP Transceiver with DDM, designed for use in Gigabit fiber networking equipment and media converters. It supports data rates up to 1.25 Gbps and distances up to 80 km (49.7 miles) over single-mode fiber. This hot-pluggable module is compliant with SFP Multi-Source Agreements (MSA) standards and compatible with Cisco equipment. With its LC Fiber connector, it offers a convenient and reliable way to expand your network to remote segments or replace defective SFPs in your existing equipment.