Product Type | SFP Transceiver Module |
Form Factor | Hot-pluggable SFP |
Transceiver Type | 1000BASE-SX |
Wavelength | 850 nm |
Data Rate | 1 Gbps |
Digital Optical Monitoring (DOM) | Supported |
Max Distance | 550 m on OM3 MMF |
Connector Type | LC duplex |
Media Type Supported | Multimode Fiber (MMF) |
Hot Swappable | Yes |
Compatibility | Cisco and MSA-compliant devices |
Standard Warranty | 5 Years |
Cisco GLC-SX-MMD 1000BASE-SX SFP Transceiver Module, MMF, 850nm, DOM

Key Benefits

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- Ideal for secure and compliant networks due to TAA compliance and 5-year warranty
- Provides efficient fiber connectivity with DOM for diagnostics and ease of maintenance
- Fully IEEE 802.3z compliant for robust Gigabit Ethernet performance over MMF
Product Overview
The Cisco GLC-SX-MMD 1000BASE-SX SFP transceiver module is engineered for high-speed Gigabit Ethernet transmission over multimode fiber (MMF). Designed to operate at a wavelength of 850nm, it supports data rates of up to 1Gbps and complies with the IEEE 802.3z standard. Its SFP form factor and dual LC/PC connector interface make integration simple in a wide range of Cisco and compatible devices, enhancing network flexibility.
A key feature of this transceiver is its Digital Optical Monitoring (DOM) capability, which provides real-time monitoring of critical parameters like optical power, voltage, and temperature—essential for maintaining consistent network performance. It also carries TAA compliance credentials, making it suitable for government and secure enterprise environments where regulatory adherence is essential. Built for professional use, the GLC-SX-MMD is manufactured in facilities located in Mexico, Singapore, or the United States and comes with a 5-year standard warranty, ensuring peace of mind in enterprise deployments.
This module is ideal for intra-building links and short-reach networking scenarios where high bandwidth and reliability are paramount. With its proven integration into Cisco network ecosystems and backward compatibility with a range of hardware, it presents an efficient solution for upgrading and optimizing Gigabit infrastructure cost-effectively.
Specifications
Product Overview
Physical & Environmental
Operating Temperature Range | 0°C to 70°C (32°F to 158°F) |
Storage Temperature Range | -40°C to 85°C (-40°F to 185°F) |
Operating Humidity | 5% to 85% non-condensing |
Storage Humidity | 5% to 95% non-condensing |
Dimensions (H x W x D) | 8.5 mm x 13.4 mm x 56.5 mm |
Weight | 75 grams (approx.) |
Cooling | Passive |
Enclosure Material | Metal |
Cloud Management & Licensing
Management Interface | Digital Optical Monitoring (via host device) |
Licensing Required | No |
Integrated Software Features | Real-time temperature, optical power, voltage monitoring |
Interfaces
Interface Type | SFP (Mini-GBIC) |
Port Type | LC Dual Port |
Interface Protocol | IEEE 802.3z |
Transmission Medium | 850nm VCSEL MMF |
Maximum Fiber Cable Distance | 550 meters (OM3); 220 meters (62.5µm OM1) |
Compliance & Origin
Country of Origin | Mexico / Singapore / United States |
TAA Compliant | Yes |
RoHS Compliance | Yes |
REACH Compliance | Yes |
Safety Standards | UL, CSA, EN60950 |
EMI Standards | FCC Part 15 Class B, EN55022 Class B |
Laser Safety | Class 1 Laser (IEC60825-1) |
Advanced Security Features
Secure Hardware ID | Yes (Cisco genuine detection) |