Cisco Systems GLC-SX-MMD SFP Transceiver Module

The Cisco GLC-SX-MMD SFP transceiver module provides 1000BASE-SX Gigabit Ethernet over multimode fiber for Cisco switches, routers, and network interface equipment, enabling short-range fiber uplinks between core infrastructure devices. It operates at 850 nm, supports multimode fiber (MMF), uses a duplex LC connector, and delivers data rates up to 1 Gbps with Digital Optical Monitoring (DOM) to monitor link status and optical power. This hot-swappable SFP is compatible with Cisco SFP ports and offers a reach of up to 550 meters on OM2 fiber, making it suitable for enterprise data centers and campus networks. Part number GLC-SX-MMD (alternate 10-2626-01) is commonly used as a replacement for existing transceivers and can be paired with related modules such as GLC-LH-SMD or SFP-GE-S when upgrading fiber connectivity.