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StarTech.com Cisco GLC-LH-SMD Compatible SFP Module - 1000BASE-LX/LH - 1GE Gigabit Ethernet 1GbE Single Mode Fiber SMF Optic Transceiver
- 100% CISCO GLC-LH-SMD COMPATIBLE: Works with Cisco switches like Firepower, ASR920, IE2000, IE4000, ASR1000 and others
- TECHNICAL SPECS: 1000BASE-LX/LH | 1 Gbps | Single Mode (SMF)/Multi Mode (MMF) | LC Connector | 1310nm | Digital Diagnostic Monitoring (DDM) | Distances up to 10km (6.2mi)
- TESTED FOR OEM HOST COMPATIBILITY: Hot-swappable in Cisco routers and switches; DDM support reports the transceiver's status to most SNMP network management tools
- OUTSTANDING SUPPORT: Backed by StarTech.com for the life of the module itself, not your equipment; our modules won't void your OEM support and with access to our Tech Advisors 5/24
- WORKS WITH MSA COMPLIANT SWITCHES: Also works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules
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100% Cisco GLC-LH-SMD compatible guaranteed - Lifetime Warranty on all SFP modul
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 1 year
- Limited Warranty period (labor): 1 year
- Read full details
Return Policies
- Return for refund until: January 31, 2026
- Return for replacement until: January 31, 2026
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-800-265-1844
- Support Email: support@startech.com
- Support Website
- View other products from STARTECH
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The StarTech.com GLCLHSMDST is a Cisco GLC-LH-SMD-compatible 1000BASE-LX/LH SFP transceiver for network administrators adding Gigabit Ethernet fiber links to compatible switches and routers, with an LC duplex connector, DDM, and reach up to 10 km over single-mode fiber.
Recommended For
- Network administrators replacing a failed or adding an optic to a Cisco router or switch that supports GLC-LH-SMD-compatible 1Gb SFPs and uses duplex LC fiber.
- IT teams connecting network closets or buildings over an existing single-mode fiber run, when a 1Gb link and a reach of up to 10 km fit the deployment.
- Administrators using a non-Cisco switch with an SFP port that accepts uncoded, MSA-compliant modules and needs a compatible 1000BASE-LX/LH optic.
- IT staff replacing or installing a module in a managed network where hot-swapping and digital diagnostics monitoring (DDM) are useful for maintenance and monitoring.
Real-World Use Scenarios
- When a network team needs to link switches in separate buildings or across a campus, it can install matching SFPs at both ends of a duplex single-mode fiber run; the result is a 1GbE uplink over distances of up to 10 km, subject to the fiber path and equipment compatibility.
- When extending a network to a remote closet or segment that already has suitable fiber, a pair of these modules can provide a 1GbE fiber link between supported switches or routers without using a copper Ethernet run.
- When a compatible Cisco switch or router has a failed or damaged optic, this hot-swappable module can serve as a replacement; the user can restore the fiber connection without replacing the network device.
- When an IT team is diagnosing an intermittent or down fiber link, DDM readings can provide transceiver status information to supported network-management tools, helping narrow troubleshooting to the optic or fiber path.
- When a switch with an SFP port needs a fiber connection but is not a Cisco model, this module may work in MSA-compliant switches that accept uncoded optics; the user should check the host device’s compatibility requirements before deployment.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Connecting network switches and routers over single-mode or multimode fiber for 1000BASE-LX/LH Gigabit Ethernet links |
| Optical Standard And Performance | IEEE 802.3z 1000BASE-LX/LH with a 1310 nm wavelength and a 1.25 Gbps transfer rate; supports distances up to 10 km on single-mode fiber and 550 m on multimode fiber |
| Fiber Interface And Monitoring | LC duplex female connector with Digital Diagnostics Monitoring (DDM) support |
| Network Protocol | TCP/IP |
| Operating Environment | Operating temperature: 0°C to 70°C (32°F to 158°F); storage temperature: −40°C to 85°C (−40°F to 185°F); humidity: 5–95% RH |
| Warranty | Lifetime warranty |
| Model Identifiers | StarTech.com model GLCLHSMDST |