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StarTech.com GLCSXMMDST Cisco GLC SX MMD Compatible SFP Module - 1000BASE-SX Fiber Optical Transceiver - GLCSXMMDST
- 100% compatibility with Cisco GLC-SX-MMD guaranteed
- Maximum transfer distance of 550m (1804 ft.)
- SFP (Mini-GBIC) meets or exceeds OEM specifications
- SFP transceiver module complies with MSA industry standards
- 1000BASE-SX fiber transceiver has low power consumption: < 1W
- Hot-swappable with other fiber optic modules
- Multimode connector
- DDM: Yes
- MTBF: 3,381,761 hours
- Max. Data Transfer Rate: 1.25 Gbps
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100% Cisco GLC-SX-MMD 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, 2027
- Return for replacement until: January 31, 2027
- 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, 2026 and December 31, 2026 you will have until January 31, 2027 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 GLCSXMMDST is a Cisco GLC-SX-MMD-compatible 1000BASE-SX SFP transceiver for network teams connecting Gigabit Ethernet equipment over multimode fiber, with an LC duplex connector and a maximum reach of 550 m.
Recommended For
- Network technicians replacing or adding a 1GbE optic in a Cisco-compatible switch or router with an SFP port, when the device accepts third-party Cisco-compatible modules. A hands-on test found this model was recognized and operated in a Cisco Catalyst 2960G and a Meraki switch.
- IT teams connecting switches or other SFP-equipped network devices over existing duplex multimode fiber, when the link needs Gigabit Ethernet rather than 10GbE. The supported reach depends on the fiber type and link conditions.
- Installers reusing multimode fiber with duplex LC connectors for a short- or medium-reach LAN link, such as between network closets, after confirming the equipment and fiber meet the 1000BASE-SX requirements.
- Network operators who want digital diagnostics from a compatible device to help check optical-link conditions; this module supports DDM/DOM, though availability of readings depends on the host equipment.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Gigabit Ethernet links in 1000BASE-SX multimode fiber networks using an LC duplex connection |
| Optical Interface And Reach | 850 nm wavelength over multimode fiber, with an LC duplex connector and a maximum distance of 550 m (1,804 ft) |
| Data Rate | Up to 1.25 Gbps |
| Network Compatibility | IEEE 802.3z 1000BASE-SX, TCP/IP, and Cisco GLC-SX-MMD compatible; meets or exceeds OEM specifications and MSA standards |
| Monitoring And Installation | Supports Digital Diagnostics Monitoring (DDM/DOM) and is hot-pluggable |
| Power | 1 W |
| Environmental Conditions | 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 And Support | Lifetime warranty and free lifetime technical support |
| Included In The Package | One SFP transceiver |
| Model Identifiers | StarTech.com GLCSXMMDST; style designation GLC-SX-MMD |