
Designed for enterprise access, campus, telecom edge and industrial network environments, the 1G SFP GLC-SX-MMD 550m 850nm Duplex LC/UPC Industrial Module, Cisco provides 1.25Gbps throughput in a SFP form factor. It operates at 850nm over MMF through a Duplex LC connector and supports link lengths up to 550m over OM2 MMF. The module meets IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant and includes digital diagnostic monitoring for live status readout.
Product Highlights
- SFP form factor, 1.25Gbps data rate
- Wavelength: 850nm
- Connector: Duplex LC
- Reach: up to 550m over OM2 MMF
- Fiber media: MMF
Specifications
| Cisco Compatible | GLC-SX-MMD |
|---|---|
| Manufacturer | HT |
| Form Factor | SFP |
| Max. Data Rate | 1.25Gbps |
| Wavelength | 850nm |
| Max. Cable Distance | 550m over OM2 MMF |
| Connector | Duplex LC |
| Optical Components | VCSEL 850nm |
| Media | MMF |
| DOM Support | Yes |
| TX Power | -9.5~-3dBm |
| Receiver Sensitivity | < -17dBm |
| Industrial Temperature Range | -40 to 85°C (-40 to 185°F) |
| Protocols | IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant |
Applications
In enterprise access, campus, telecom edge and industrial network environments, the 1G SFP GLC-SX-MMD 550m 850nm Duplex LC/UPC Industrial Module, Cisco delivers 1.25Gbps transmission over MMF with a reach of 550m over OM2 MMF. With its Duplex LC optical interface, the module works directly with the MMF infrastructure already installed in most facilities. Compatibility with Cisco systems is verified in our own test lab before shipment, so the unit works out of the box as an equivalent of GLC-SX-MMD.
Standards and Compatibility
Compliance: IEEE 802.3z, SFF-8472, FC-PI, SFP MSA (INF-8074i) Compliant. For projects standardized on Cisco hardware, this product replaces the GLC-SX-MMD directly, with identical fit and function. Every unit's EEPROM coding and link behavior are verified on real host equipment in our lab, so what arrives at your site is ready to use.
Ordering Information
Our part number for this module is SFP1G-SX-85-I. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
Reliability Control
From incoming component inspection to final burn-in, quality is controlled at each step of production. Finished units are verified on real networking equipment in our compatibility lab, and test records are kept per batch so that any field question can be traced back quickly.
Packaging Options
Default packaging is simple and protective: sealed bag, blister tray, export carton. For OEM customers we also offer white-label packing, custom printed boxes and per-unit labeling with your own part numbers, so the goods can go straight into your sales channel.
Customization Service
Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.



