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GLC-SX-MMD-C
1000BASE-SX SFP MMF E-Temp DOM Cisco Compatible
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Since 2016, Enterprise-Trusted
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GLC-SX-MMD-C is a Cisco SFP transceiver engineered for 1G Ethernet applications over multi-mode fiber. It features an LC connector, supports a transmission distance optimal for short-range connectivity, and operates at a wavelength of 850 nm, making it suitable for data center, enterprise network, and telecom applications.
This compact module adheres to industry SFP form factor standards with precise physical dimensions suitable for high-density deployments. It supports Ethernet protocols and is designed to deliver reliable performance in environments requiring stringent operational temperature ranges and compatibility with Cisco networking equipment.
GLC-SX-MMD-C price is is available on request. Get immediate quote.
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| Product Type | Transceiver | Transceiver | Transceiver | Transceiver | Transceiver |
| Form Factor | SFP | SFP | SFP | SFP | SFP |
| Data Rate | 1G | 1G | 1G | 1G | 1G |
| Connector Type | LC | SC | LC | LC | LC |
| Wavelength | 850 nm | 850nm | 1310 nm / 1490 nm | 850 nm | 1310/1490 nm |
| Transmission Distance | Short-Range | Short-Range | Long-Range | Extended-Range | Long-Range |
| Fiber Type | Multi-mode | Multi-mode | Single-mode | Multi-mode | Single-mode |
| Max Distance | 2200 m | 550 meters | 120 km | 2000 meters | 10 km |
| Supported Protocols | Ethernet | Ethernet | Ethernet | Ethernet | Ethernet |
| Network Interface | Fiber | Fiber | Fiber | Fiber | Fiber |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco / Juniper / Huawei / Arista | Cisco | Cisco | Cisco |
| Product Name | Cisco GLC-SX-MMD-C 1000BASE-SX SFP Transceiver | SFP-GE-S-C | GLC-BX-D120-C | GLC-SX-MMD-2K-C | Cisco GLC-BX-U-C Bidirectional SFP Transceiver |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Excellent Cisco compatibility. This SFP provides stable fiber connectivity for our short-range networking.
Reliable transceiver with accurate DOM monitoring. Consistent performance across our enterprise switches.
Solid multi-mode performance. This module integrated flawlessly with our existing Cisco infrastructure.
Dependable fiber link with steady throughput. The extended temperature range is a major plus.
Consistent and fast connectivity. No data loss detected over long-term production use.
Professional grade transceiver. Highly reliable and easy to install in our server room.
Exceptional compatibility and performance. Perfect for our short-haul high-speed data links.
Stable connectivity for our office backbone. The DOM support is helpful for maintenance.
The GLC-SX-MMD-C is a 1000BASE-SX small form-factor pluggable (SFP) transceiver for multimode fiber that supports extended temperature ranges and digital optical monitoring (DOM) with full Cisco compatibility.
The GLC-SX-MMD-C supports a data rate of 1.25 Gbps (1 Gbps Ethernet) and operates at an 850 nm wavelength.
The GLC-SX-MMD-C supports OM1 (62.5 µm), OM2 (50 µm), OM3, and OM4 multimode fiber.
The GLC-SX-MMD-C can transmit up to 275 meters on OM2 and up to 550 meters on OM4 multimode fiber.
The GLC-SX-MMD-C operates from –40 °C to 85 °C, meeting extended temperature (E-Temp) requirements.
Digital optical monitoring (DOM) in the GLC-SX-MMD-C provides real-time access to optical power, temperature, laser bias current, and supply voltage via an I2C interface.
Yes, the GLC-SX-MMD-C is fully Cisco-compliant, adhering to the SFP Multi-Source Agreement (MSA) and Cisco’s interoperability standards.
The GLC-SX-MMD-C is supported on Cisco switches, routers, and any third-party devices that accept Cisco-compatible SFP modules.
Yes, the GLC-SX-MMD-C is hot-swappable, allowing insertion and removal without powering down the host device.
Align the GLC-SX-MMD-C with the SFP port, insert until the latch clicks, and verify link status through the port LED.
Use the built-in DOM to view real-time optical power, temperature, voltage, and bias current via SNMP or CLI commands.
The GLC-SX-MMD-C consumes ≤1.0 W of power under normal operating conditions.
Yes, the GLC-SX-MMD-C includes a one-year limited warranty covering defects in materials and workmanship.
Yes, the extended temperature range, DOM capabilities, and Cisco compatibility make the GLC-SX-MMD-C ideal for data center deployments.
The GLC-SX-MMD-C delivers equivalent performance, reliability, and Cisco interoperability at a lower cost compared to OEM Cisco SFP modules.