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Small silver SFP transceiver module with LC fiber port and bail latch

STARTECH

STARTECH SFPGESST SFP Transceiver 1000BASE-SX 850nm 550m 1.25Gbps

SKU CH-94MW-NJV9G

Connects network equipment via multimode fibre at 1.25 Gbps up to 550 m with an LC connector

  • StandardsIEEE 802.3z 1000BASE-SX
  • Wavelength850nm
  • Fiber CableMMF
  • Ports1 - Fiber Optic LC Female
  • Max Distance550 m (1804 ft)
  • Transfer Rate1 Gbps

Type 1000Base-SX

  • Gigabit Ethernet speeds up to 1.25 Gbps for fast network throughput
  • Reaches 550 m over multimode fiber for extended campus links
  • 850 nm wavelength optimised for short-range multimode performance
  • Hot-pluggable SFP design enables module swaps without powering down
  • Cisco SFP-GE-S compatible for drop-in deployment in existing gear

STARTECH SFPGESST SFP Transceiver 1000BASE-SX

This module provides a 1 Gbps fibre link for network switches and routers. It targets administrators who need to extend a Gigabit Ethernet segment over multimode fibre. The SFP form factor fits standard SFP cages in compatible equipment. Buyers who require single-mode reach or 10 Gbps speeds cannot use this transceiver.

IEEE 802.3z 1000BASE-SX practical limits

The 850 nm wavelength operates over multimode fibre up to 550 m or 1804 ft. Data rates reach 1.25 Gbps within that distance. Beyond the stated range signal loss increases and link stability drops. The LC duplex connector mates only with LC patch cords; other connector types need a hybrid cable or adapter.

Hot-pluggable installation and common issues

The transceiver inserts into an SFP cage without powering down the host device. Compliance with MSA standards ensures mechanical fit in multi-vendor hardware. Cisco SFP-GE-S compatibility is guaranteed by the supplier. Failures usually stem from contaminated LC ferrules, mismatched fibre polarity or exceeding the 550 m distance budget.

Highlights

  • Gigabit Ethernet speeds up to 1.25 Gbps for fast network throughput
  • Reaches 550 m over multimode fiber for extended campus links
  • 850 nm wavelength optimised for short-range multimode performance
  • Hot-pluggable SFP design enables module swaps without powering down
  • Cisco SFP-GE-S compatible for drop-in deployment in existing gear

Specifications

BrandStarTech.com
ModelSFPGESST
StandardsIEEE 802.3z 1000BASE-SX
Wavelength850nm
Fiber CableMMF
Ports1 - Fiber Optic LC Female
Max Distance550 m (1804 ft)
Transfer Rate1 Gbps
FeatureData rates up to 1.25 Gbps
Supports distances up to 550m (1804ft)
Complies with SFP Multi-Source Agreements standards (MSA)
Compatible with Cisco equipment
LC Fiber connector
Fully Hot Pluggable
Weight20
Package Contents95993S
Shipping weight0.02 kg
Package size117 × 92 × 33 mm

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Questions about this item

Which version of the SFPGESST should I choose for a 1 Gbps multimode link?

The module is a single 1000BASE-SX variant operating at 850 nm with a 1.25 Gbps data rate and 550 m reach on multimode fibre.

What does the 1.25 Gbps headline rate deliver in a live switch?

It provides a full 1 Gbps Ethernet throughput per port with hot-pluggable LC connectivity and MSA compliance for multi-vendor operation.

What interface standard does the LC connector use and what distance does it cap?

The LC duplex interface follows IEEE 802.3z 1000BASE-SX and SFP MSA standards, limiting reach to 550 m (1804 ft) on multimode fibre.

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