StarTech.com Dell EMC QSFP-40G-LR4 Compatible QSFP+ Module - 40GBASE-LR4 40GE QSFP+ 40GbE Single Mode Fiber SMF Optic Transceiver 10km DDM
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StarTech.com Dell EMC QSFP-40G-LR4 Compatible QSFP+ Module - 40GBASE-LR4 40GE QSFP+ 40GbE Single Mode Fiber SMF Optic Transceiver 10km DDM

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$ 1,001.14
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The QSFP40GLR4ES is a Dell EMC QSFP-40G-LR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Dell EMC brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-LR4 compliant networks, with a maximum distance of up to 10 km (6.2 mi).

Technical Specifications:

  • Wavelength: 1311nm
  • Maximum Data Transfer Rate: 40 Gbps
  • Type: Single Mode
  • Connection Type: MPO Connector
  • Maximum Transfer Distance: 10 km (6.2 mi)
  • MTBF: 8,596,956 hours hours
  • Power Consumption: < 1.3W
  • Digital Diagnostics Monitoring (DDM): Yes

This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.

StarTech.com SFPs

All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.


  • 100% DELL EMC QSFP-40G-LR4 COMPATIBLE QSFP+ TRANSCEIVER: Designed, programmed and tested to work with compatible Dell EMC switches and routers to deliver dependable 40GbE connectivity
  • TECHNICAL SPECS: 40GBASE-LR4
  • 40Gbps
  • Single Mode (SMF)
  • LC Connector
  • 1311nm

The QSFP40GLR4ES is a Dell EMC QSFP-40G-LR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Dell EMC brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-LR4 compliant networks, with a maximum distance of up to 10 km (6.2 mi).

Technical Specifications:

  • Wavelength: 1311nm
  • Maximum Data Transfer Rate: 40 Gbps
  • Type: Single Mode
  • Connection Type: MPO Connector
  • Maximum Transfer Distance: 10 km (6.2 mi)
  • MTBF: 8,596,956 hours hours
  • Power Consumption: < 1.3W
  • Digital Diagnostics Monitoring (DDM): Yes

This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions.

StarTech.com SFPs

All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.


  • 100% DELL EMC QSFP-40G-LR4 COMPATIBLE QSFP+ TRANSCEIVER: Designed, programmed and tested to work with compatible Dell EMC switches and routers to deliver dependable 40GbE connectivity
  • TECHNICAL SPECS: 40GBASE-LR4
  • 40Gbps
  • Single Mode (SMF)
  • LC Connector
  • 1311nm