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Small rectangular SFP transceiver module with LC duplex port and metallic finish

STARTECH

STARTECH GLCSXMMDST SFP transceiver 1000BASE-SX 850nm 550m

SKU CH-EY1Y-M0Y53

A 1000BASE-SX SFP transceiver delivering 1.25 Gbps over 850 nm multimode fibre up to 550 m with LC duplex connector

  • Device TypeTransceiver
  • StandardsIEEE 802.3z 1000BASE-SX
  • Wavelength850nm
  • Fiber CableMulti Mode
  • ProtocolsTCP/IP
  • Ports1 - Fiber Optic LC Duplex Female
  • 100% Cisco GLC-SX-MMD compatibility guaranteed
  • Gigabit Ethernet up to 550 m over multimode fibre
  • Hot-swappable SFP module compliant with MSA standards
  • Low power consumption under 1 W
  • Operating temperature range 0 °C to 70 °C

Cisco GLC-SX-MMD compatible transceiver

The StarTech.com GLCSXMMDST is a hot-swappable SFP module built for 1000BASE-SX networks. It delivers Gigabit Ethernet over multimode fibre with an LC duplex connector. Network engineers upgrading or repairing Cisco equipment can install it without reconfiguring the switch.

Operating range 0 °C to 70 °C and sub-1 W draw

The transceiver runs from 32 °F to 158 °F and survives storage from -40 °C to 85 °C in 5 % to 95 % humidity. Power consumption stays below one watt, so dense chassis deployments add minimal thermal load. No fan or heatsink is required on the module itself.

DDM monitoring and lifetime support included

Digital Diagnostics Monitoring lets administrators track temperature, voltage and optical levels in real time. The package contains only the transceiver; cables and patch panels are sourced separately. Lifetime warranty and free technical support cover the module for its entire service life.

Highlights

  • 100% Cisco GLC-SX-MMD compatibility guaranteed
  • Gigabit Ethernet up to 550 m over multimode fibre
  • Hot-swappable SFP module compliant with MSA standards
  • Low power consumption under 1 W
  • Operating temperature range 0 °C to 70 °C

Specifications

BrandStarTech.com
ModelGLCSXMMDST
Device TypeTransceiver
StandardsIEEE 802.3z 1000BASE-SX
Wavelength850nm
Fiber CableMulti Mode
ProtocolsTCP/IP
Ports1 - Fiber Optic LC Duplex Female
Max Distance550 m (1804 ft)
Transfer Rate1.25 Gbps
TemperatureOperating Temperature: 0 degree C to 70 degree C (32 degree F to 158 degree F)
Storage Temperature: -40 degree C to 85 degree C (-40 degree F to 185 degree F)
Humidity5~95% RH
FeatureDelivers reliable Gigabit Ethernet connections for 1000Base-SX compliant networks
100% Cisco compatible SFP, equivalent to Cisco GLC-SX-MMD
Backed by lifetime warranty and free lifetime technical support
Meets or exceeds OEM specifications and MSA (Multi-Source Agreement) industry standards
Supports Digital Diagnostics Monitoring (DDM / DOM)
850 nm optical wavelength
Supports multimode (maximum distance 550 m / 1804 ft.)
LC fiber connector
Maximum data rates up to 1.25Gbps
Hot-pluggable
Package Contents1 - SFP transceiver
Shipping weight0.05 kg
Package size120 × 90 × 30 mm

Questions about this item

How do I install the GLCSXMMDST into a Cisco switch and what step is often missed?

Insert the hot-swappable SFP into an empty SFP slot until it clicks, then connect an LC duplex multimode patch cable; the step often missed is removing the dust caps from both the module and the cable ends before linking.

What maintenance or replacement will the GLCSXMMDST need over its lifetime?

The module itself has no user-serviceable parts; only the external LC duplex multimode patch cables may need replacement if connectors are damaged or contaminated.

What is the first limit reached when running the GLCSXMMDST continuously at full 1.25 Gbps load?

The 550 m maximum reach on multimode fibre is the primary distance limit; the module operates within 0 °C to 70 °C, so sustained use within that temperature range will not trigger thermal throttling.

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