Count on powerful performance and cost-effective 40 Gigabit Ethernet connections over multimode fiber with this 40GBase-SR4 QSFP+ transceiver module
Cisco QSFP-40G-SR4 Compatible QSFP+
40 Gigabit Fiber QSFP+
MM with MPO fiber connector
850nm optical wavelength
Supports Digital Diagnostics Monitoring (DDM / DOM)
40G QSFP+ with Lifetime Warranty
QSFP-40G-SR4 QSFP+ transceiver / Optical transceiver / Fiber transceiver / Cisco QSFP-40G-SR4 alternative / multimode QSFP+ / QSFP+ SR
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Overview
Specs
Reviews
100% Cisco QSFP-40G-SR4 compatible guaranteed-Lifetime Warranty on all SFP modul
Learn more about the STARTECH QSFP40GSR4ST
Model
Brand
StarTech.com
Model
QSFP40GSR4ST
Details
Device Type
Transceiver
Standards
IEEE 802.3ba 40GBASE-SR4
Wavelength
850nm
Fiber Cable
Multi Mode
Ports
1 - Fiber Optic LC Duplex Female
Max Distance
150 m (492 ft)
Transfer Rate
40 Gbps
Environmental
Temperature
Operating 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)
Humidity
5~95% RH
Features
Feature
Delivers reliable 40 Gigabit Ethernet connections for 40GBase-SR4 compliant networks
100% Cisco compatible, equivalent to the Cisco QSFP-40G-SR4
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)
850 nm optical wavelength
Multimode with maximum distance of up to 150 m (492 ft.) and MPO fiber connector
Maximum data rates up to 40Gbps
Hot-pluggable, compatible with a 40 Gigabit Ethernet QSFP port
Package Contents
Package Contents
1 - QSFP+ transceiver
Manufacturer Warranty
Parts
Lifetime
Additional Information
First Listed on Newegg
March 27, 2026
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.