StarTech Cisco GLC-LH-SM Compatible SFP Module - Reliable 1GE Link

In this review the StarTech Cisco GLC-LH-SM compatible SFP module is assessed as a budget-friendly fiber transceiver for network engineers and IT teams that need reliable 1 Gbps links over single-mode fiber. The bottom line: it delivers the essential 1000BASE-LX/LH performance and hot-swappable compatibility with many Cisco switches, including IE3400, IE3300 and IE3200, making it a practical choice when OEM modules are cost-prohibitive or when spares are required for field service.

Key Features

• Cisco compatibility: Designed and tested to work with Cisco models such as IE3400, IE3300 and IE3200 so it slots into existing Cisco networks without configuration changes.
• 1000BASE-LX/LH speed: Provides a stable 1 Gbps optical link suitable for uplinks and server connections where gigabit throughput is required.
• LC connector and 1310nm wavelength: Uses the common LC connector at 1310nm for long-reach single-mode links up to 20 km, simplifying fiber inventory.
• Hot-swappable: Can be replaced without powering down compatible routers and switches, reducing maintenance windows and downtime.
• Works with MSA-compliant hosts: Also functions in many third-party switches from Ubiquiti, D-Link, Netgear and others that accept uncoded modules, increasing deployment flexibility.
• Vendor support: Backed by StarTech.com support for the life of the module, offering an avenue for troubleshooting separate from OEM equipment support.

Who It's For

The module suits network administrators, field technicians and small IT teams that need a low-cost, compatible spare or replacement for Cisco switches and similar MSA-compliant hardware. It is particularly helpful for edge sites and industrial switches where long-reach single-mode links are required.

It is not aimed at environments that mandate original OEM-branded optics for policy or warranty reasons, or for users who need multi-gigabit or DWDM-capable optics; those buyers should select modules that explicitly match their higher-speed or vendor-mandated requirements.

Pros & Cons

Pros

• Well matched to Cisco IE-series and similar switches for plug-and-play compatibility.
• Good value for a 1 Gbps single-mode LC module supporting distances up to 20 km.
• Hot-swappable design reduces maintenance disruption in live networks.
• Works across many MSA-compliant brands, offering deployment flexibility.

Cons

• Not an OEM-branded Cisco module, so organizations that require only original optics may need to verify policy compliance.
• Supports single-gigabit speeds only, so it is not suitable for 10GbE or higher links.

Specifications

Standard	1000BASE-LX/LH
Data Rate	1 Gbps
Fiber Type	Single Mode (SMF) / Multi Mode (MMF) compatible
Connector	LC
Wavelength	1310 nm
Maximum Distance	Up to 20 km (12.4 mi)
Compatibility	Cisco IE3400, IE3300, IE3200, ME1200, ME2400 and other MSA-compliant switches

Our Verdict

The StarTech Cisco GLC-LH-SM compatible SFP module is a sensible, cost-effective choice for teams that need dependable 1 Gbps single-mode links and broad compatibility with Cisco and other MSA-compliant switches. It offers practical features like hot-swap capability and lifetime vendor support, making it a good value for spares and field replacements where OEM-only optics are not required.

Frequently Asked Questions

Will this module work in non-Cisco switches?
Yes, it works with many MSA-compliant switches from brands such as Ubiquiti, D-Link, Netgear, Supermicro and TP-Link that accept uncoded modules.

What is the maximum reach for this transceiver?
It supports single-mode links up to 20 km (12.4 mi) using a 1310 nm wavelength and LC connector.

Can it be hot-swapped in a live switch?
Yes, the module is tested for OEM host compatibility and is hot-swappable in compatible Cisco routers and switches.