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StarTech.com Cisco QSFP-40G-LR4 Comp. QSFP+ Module - 40GBASE-LR4 - 40GE Gigabit Ethernet 40GbE Single Mode Fiber SMF Optic Transceiver

SKU QSFP40GLR4ST
Sold out
Original price $3,259.19
Original price $3,259.19 - Original price $3,259.19
Original price $3,259.19
Current price $2,799.44
$2,799.44 - $2,799.44
Current price $2,799.44
The QSFP40GLR4ST is a Cisco QSFP-40G-LR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco™ 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: 1270nm to 1330nm
  • Maximum Data Transfer Rate: 40 Gbps
  • Type: Single Mode Fiber
  • Connection Type: LC Connector
  • Maximum Transfer Distance: 10 km (6.2 mi)
  • MTBF: 1,489,426 hours
  • Power Consumption: Less than 2.5 Watts
  • 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.

More from the Manufacturer


  • 100% CISCO QSFP-40G-LR4 COMPATIBLE: Works with Cisco switches like Firepower, ASR1000, ASR9000, C9300, C3850 and others
  • TECHNICAL SPECS: 40GBASE-LR4
  • 40 Gbps
  • Single Mode (SMF)
  • LC Connector
  • 1270nm to 1330nm
  • Digital Diagnostic Monitoring (DDM)
  • Distances up to 10km (6.2mi)
  • TESTED FOR OEM HOST COMPATIBILITY: Hot-swappable in Cisco routers and switches; DDM support reports the transceiver's status to most SNMP network management tools
  • OUTSTANDING SUPPORT: Backed by StarTech.com for the life of the module itself, not your equipment; our modules won't void your OEM support and with access to our Tech Advisors 5/24
  • WORKS WITH MSA COMPLIANT SWITCHES: Also works with switch models from Ubiquiti, D-Link, Netgear, Supermicro, TP-Link and more that accept uncoded modules

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