Cisco WSP-Q40GLR4L Compatible QSFP+ Module - 40GBASE-LR4 - 40GbE Single Mode Fiber SMF Optic Transceiver - 40GE Gigabit Ethernet QSFP+ - LC 2km - 1270nm to 1330nm - DDM Cisco Firepower, C9300, C3850

40 Gbps | Single Mode Fiber | LC | 2 km (1.2 mi) | Lifetime Warranty

Product ID: WSP-Q40GLR4L-ST

0 stars (0 reviews) |
  • 100% CISCO WSP-Q40GLR4L COMPATIBLE: Works with Cisco switches like Firepower, C9300, C3850, NCS540, C9500 and others
  • TECHNICAL SPECS: 40GBASE-LR4 | 40 Gbps | Single Mode (SMF) | LC Connector | 1270nm to 1330nm | Digital Diagnostic Monitoring (DDM) | Distances up to 2km (1.2mi)
  • 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
Your price
£876.99 GBP excl. VAT
£1,052.39 GBP incl. VAT

In stock: 10

Where to buy products
Where to buy

The WSP-Q40GLR4L-ST is a Cisco WSP-Q40GLR4L compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco brand switches and routers. It delivers dependable 10 GbE connectivity over fiber cable, for 10GBase-LR4 compliant networks, with a maximum distance of up to 2 km (1.2 mi). 

Technical Specifications: 

  • Wavelength: 1270nm to 1330nm
  • Maximum Data Transfer Rate: 40 Gbps 
  • Type: Single Mode 
  • Connection Type: LC Connector 
  • Maximum Transfer Distance: 2 km (1.2 mi)
  • 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. SFPs 

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

Partner Numbers

  • Exertis 10273042
  • Ingram Micro UK V934647
  • CMS Distribution V241756
  • UPC 065030886017


Warranty Information Warranty Lifetime
Material Steel
Hardware Compatible Brand Cisco
Industry Standards IEEE 802.3ba 40GBASE-IR4
Packaging Information Package Height 3.5 cm [1.4 in]
Package Length 20.5 cm [8.1 in]
Shipping (Package) Weight 60 g [2.1 oz]
Package Width 12 cm [4.7 in]
Performance DDM Yes
Maximum Data Transfer Rate 40.00 Gbps
Max Transfer Distance 2 km (1.2 mi)
MTBF 95,832,027 hours
Wavelength 1270nm to 1330nm
Compatible Networks 40 Gbps
Type Single Mode
Fiber Operating Mode Full-Duplex
Physical Characteristics Product Height 8.5 mm [0.3 in]
Product Length 1.8 cm [0.7 in]
Weight of Product 49 g [1.7 oz]
Product Width 12.2 cm [4.8 in]
What's in the Box 1 - Included in Package QSFP+ Transceiver


Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)


Product Support

Talk to an Advisor

We are always ready to assist you with any questions you may have.

Live Chat (opens in new window)

Frequently Asked Questions


Ensure the Network Device is running a compatible Firmware Version on a compatible Operating System. Please consult the manufacturer of the Network Device for more information regarding the minimum required or recommended system software.

Before You Buy

UPC and APC are fiber connector types. UPC (Ultra Physical Contact) connectors have a fiber connector end face that has been polished to a dome-shape. APC (Angled Physical Contact) connectors have a fiber connector end face that has been polished at an eight degree angle. When building fiber solutions, be sure to avoid mixing UPC and APC connectors. UPC and APC cannot mate with one another because causes the fiber cores don’t touch. This can cause a degraded connection or none at all. fiber products use UPC connectors.

Compliance and safety

Compliance letters

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

Customer Reviews

(0 reviews)
0 out of 5 stars
  • 5 (0)
  • 4 (0)
  • 3 (0)
  • 2 (0)
  • 1 (0)
Tell us what you think of this product.
Need a little help getting started?

Check out our review guidelines.

Back to top