GLC-SX-MMD Cisco 1.25Gbps 1000Base-SX Multi-mode Fiber Connector SFP Transceiver Module

GLC-SX-MMD Overview

The Cisco GLC-SX-MMD is a high-performance 1000Base-SX SFP transceiver module designed for reliable Gigabit Ethernet connectivity over multi-mode fiber networks. Operating at an 850nm wavelength, it supports data transmission distances of up to 550 meters, depending on the fiber quality, making it ideal for short-range applications such as data centers, enterprise LANs, and campus networks. Equipped with a duplex LC connector, this module ensures stable and efficient optical connections while complying with IEEE 802.3z standards for seamless interoperability with Cisco networking devices. One of its key features is Digital Optical Monitoring (DOM) support, which allows real-time visibility into parameters like temperature, voltage, and optical power levels, helping improve network management and troubleshooting.