SFP Module StarTech Cisco GLC-LH-SM Compatible

The StarTech.com SFP Module (model SFPGLCLHSMST) is a Cisco GLC-LH-SM compatible fiber transceiver designed for 1000BASE-LX/LH networks. It supports 1 Gbps (maximum 1.25 Gbps line rate) data transfer over single-mode or multimode fiber using an LC connector and provides a maximum single-mode reach of up to 10 km (6.2 mi). The module is hot-swappable and built to work with Cisco switches and routers while offering low power consumption and long operational life.

Advantages

This SFP module delivers reliable 1GbE fiber connectivity with compatibility for Cisco GLC-LH-SM ports, low power consumption (under 1 W), and a high MTBF (approximately 3,092,408 hours). Its stainless steel housing and LC connector ensure a compact, industry-standard form factor suitable for rack and field installations. The product is backed by StarTech.com’s lifetime warranty and multilingual technical support.

Suitable for

• Upgrading or replacing 1000BASE-LX/LH SFP ports on Cisco switches and routers
• Short- and long-distance fiber links (multimode up to 1 km, single-mode up to 10 km)
• Enterprise and industrial network segments requiring standard LC fiber transceivers
• Environments where hot-swappable modules reduce maintenance downtime

Key specifications

• Model: SFPGLCLHSMST (StarTech.com, Cisco GLC-LH-SM compatible)
• Interface type: SFP
• Standards: 1000BASE-LX/LH
• Wavelength: 1310 nm
• Maximum data transfer rate: 1.25 Gbps (1 Gbps typical for 1000BASE)
• Fiber type: Single-mode / Multimode
• Connector: LC
• Maximum transfer distance: 10 km (6.2 mi) - SM / 1 km (0.6 mi) - MM
• Power consumption: < 1 W
• MTBF: 3,092,408 hours
• Hot-swappable: Yes
• Housing color/material: Stainless steel

How to use

Power down the device only if required by your equipment vendor; otherwise insert the SFP module into an empty SFP port until it seats firmly. Connect LC fiber cables to the module and to the corresponding link partner, ensuring proper fiber type (single-mode or multimode) and polarity. After insertion, verify link status and network configuration on the switch or router. For replacements, remove the old module by disengaging any retention mechanism and pull the module straight out before installing the new unit.

Usage recommendations

Use single-mode fiber for distances up to 10 km and multimode fiber for shorter runs up to 1 km. Ensure the connected equipment is compatible with Cisco GLC-LH-SM type modules or allows third‑party SFPs. Store unused modules in dust-free caps and avoid touching the fiber ferrule to maintain optical performance.