Cisco 1 Gbps 1000BASE‑SX SFP 850 nm optical transceiver 850 nm GLC‑SX‑MMD

The GLC‑SX‑MMD is a 1 Gbps 1000BASE‑SX SFP optical transceiver designed for multimode fiber (MMF), operating at 850 nm wavelength, and comes with Digital Diagnostic Monitoring (DDM/DOM) for real-time performance dataReach & Fiber Compatibility Fiber Type Core Size Max Distance OM1 (62.5 µm) Legacy FDDI Up to 220 m OM1 (62.5 µm) Standard Approx 275 m OM2/OM3/OM4 (50 µm) Laser-optimized Up to 550 m 50 µm OM3 Advanced MMF Up to 1 km Key Specs Data Rate: 1 Gbps (1.25 Gbps line rate)  Connector: Duplex LC DDM/DOM: Supported apiece Operating Temp: Standard: 0–70 °C Extended/Industrial: –5 °C to 85 °C (some variants ~–40 °C to 85 °C) Power: < 1 W typical (SFP spec)  Compliance: IEEE 802.3z & SFF‑8472 standards  Use Cases Intra-building links within data centers or campuses Fiber uplink in access or core switching environments Short-range interconnects (e.g., between racks) with multimode fiber Diagnostic-enabled deployments, leveraging DOM for network monitoring Download