Product Overview
The Cisco GLC-SX-M MD is a 1000BASE-SX SFP transceiver module designed for Gigabit Ethernet applications over multimode fiber (MMF). It operates at a wavelength of 850 nm and supports distances up to 550 meters, depending on the fiber type. This module includes Digital Optical Monitoring (DOM) for real-time diagnostics, making it ideal for campus, data center, and enterprise wiring closet deployments.
Product Details
| Specification | Description |
| Product Model | GLC-SX-M MD |
| Form Factor | SFP (Small Form-Factor Pluggable) |
| Interface Type | 1000BASE-SX |
| Data Rate | 1 Gbps |
| Wavelength | 850 nm |
| Fiber Type | Multimode Fiber (MMF) |
| Connector Type | LC duplex |
| Max Distance | 550 m (OM2), 275 m (OM1) |
| DOM Support | Yes (Digital Optical Monitoring) |
| Hot Swappable | Yes |
| Operating Temperature | 0°C to 70°C |
| Compliance | IEEE 802.3z, RoHS |
| Cisco Compatibility | Compatible with a wide range of Cisco switches |
Product Features
Provides 1 Gbps Gigabit Ethernet connectivity over MMF
Ideal for short-range fiber links in enterprise networks and data centers
Supports Digital Optical Monitoring for real-time performance tracking
Operates at 850 nm with LC duplex connector
Hot-swappable for easy deployment and maintenance
Backward compatible with standard 1000BASE-SX interfaces
Fully compliant with IEEE 802.3z standard
Similar Models Comparison
| Model | Data Rate | Interface | Fiber Type | Max Distance | Wavelength | DOM | Connector |
| GLC-SX-MM D | 1 Gbps | 1000BASE-SX | MMF | 550 m | 850 nm | Yes | LC |
| GLC-SX-MM | 1 Gbps | 1000BASE-SX | MMF | 550 m | 850 nm | No | LC |
| GLC-LH-SMD | 1 Gbps | 1000BASE-LX | SMF | 10 km | 1310 nm | Yes | LC |
| GLC-ZX-SMD | 1 Gbps | 1000BASE-ZX | SMF | 80 km | 1550 nm | Yes | LC |
| GLC-BX-D | 1 Gbps | 1000BASE-BX | SMF | 10 km | 1490/1310 | No | LC |
Latest Cisco 1G Multimode Fiber SFP Modules
| Model | Interface | Fiber Type | Max Distance | Wavelength | Features |
| GLC-SX-MM D | 1000BASE-SX | MMF | 550 m | 850 nm | DOM, hot-swappable |
| GLC-SX-MM | 1000BASE-SX | MMF | 550 m | 850 nm | Basic version |
| SFP-10G-SR | 10GBASE-SR | MMF | 300 m | 850 nm | 10G upgrade option |
