StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GE Gigabit Ethernet 40GbE Multimode Fiber MMF Optic Transceiver

StarTech.com Cisco QSFP-40G-CSR4 Compatible QSFP+ Module - 40GBASE-SR4 - 40GE Gigabit Ethernet 40GbE Multimode Fiber MMF Optic Transceiver

  • $ 186.99

We currently have 9 in stock.
SKU: MPN: QSFP-40G-CSR4-ST UPC:
Product Description

The QSFP-40G-CSR4-ST is a Cisco QSFP-40G-CSR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Arista Networks brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-SR4 compliant networks, with a maximum distance of up to 400 m (1312 ft.).

Technical Specifications:

  • Wavelength: 850nm
  • Maximum Data Transfer Rate: 40 Gbps
  • Type: Multi Mode
  • Connection Type: MPO
  • Maximum Transfer Distance: 400 m (1312 ft.)
  • MTBF: 95,832,027 hours
  • Power Consumption: Low power consumption
  • 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% CISCO QSFP-40G-CSR4 COMPATIBLE: Works with Cisco switches like Firepower, ASR9000, ASR1000, C9300, NCS5500 and others
  • TECHNICAL SPECS: 40GBASE-SR4
  • 40 Gbps
  • Multi Mode (MMF)
  • MPO Connector
  • 850nm

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The QSFP-40G-CSR4-ST is a Cisco QSFP-40G-CSR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Arista Networks brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBase-SR4 compliant networks, with a maximum distance of up to 400 m (1312 ft.).

Technical Specifications:

  • Wavelength: 850nm
  • Maximum Data Transfer Rate: 40 Gbps
  • Type: Multi Mode
  • Connection Type: MPO
  • Maximum Transfer Distance: 400 m (1312 ft.)
  • MTBF: 95,832,027 hours
  • Power Consumption: Low power consumption
  • 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% CISCO QSFP-40G-CSR4 COMPATIBLE: Works with Cisco switches like Firepower, ASR9000, ASR1000, C9300, NCS5500 and others
  • TECHNICAL SPECS: 40GBASE-SR4
  • 40 Gbps
  • Multi Mode (MMF)
  • MPO Connector
  • 850nm