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LQ-CW40-LR4C 40g qsfp+ 1310nm 10km duplex lc dom smf optical transceiver module
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LINK-PP LQ-CW40-LR4C 40G QSFP+ 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module

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Product summary

Product
LINK-PP LQ-CW40-LR4C 40G QSFP+ 1310nm 10km Duplex LC DOM SMF Optical Transceiver Module
SKU
187848
P/N
LQ-CW40-LR4C
Price
$ 149
Stock
1300 in Stock
Sold
2.7K
For Order Over $1000 Get $15.00 Off , Code: Linkpp15
For Order Over $3000 Get $50.00 Off , Code: Linkpp50
For Order Over $5000 Get $100.00 Off , Code: Linkpp100
New Users: $10 Coupon for Orders , Code: linkpp2610
48 Reviews
4 Questions
2.7K Sold
Shipping:
Free Shipping
to United States via FedEx
Estimated delivery time : 3 - 10 days.
5-Year Warranty 30-Day Returns 30-Day Exchange
Warranty
  • Providing industry-leading 5-year warranty.
  • Read the table for details of all products' warranty.
Returns & Exchange
  • Refunds will be received about 5 business days after the receipt of returned items.
  • Items in stock for replacement can be shipped within 1 business day.
  • Read the full return policy for details.
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LINK-PP LQ-CW40-LR4C 40G QSFP+ Specifications

The LINK-PP LQ-CW40-LR4C is a premium 40GBASE-LR4 QSFP+ optical transceiver designed for high-speed data center networks. This commercial-grade 40G Ethernet module operates over single-mode fiber (SMF), delivering exceptional bandwidth and long-range reliability. Featuring a hot-swappable QSFP+ form factor, it ensures seamless integration, minimal latency, and maximum performance for enterprise-level telecommunication upgrades.

LINK-PP Part Number LQ-CW40-LR4C Vendor Name LINK-PP
Form Factor QSFP+ Max Data Rate 40Gbps
Wavelength 1271nm, 1291nm, 1311nm, 1331nm Max Cable Distance 10km
Connector Duplex LC Media SMF
Transmitter Type DFB Receiver Type

PIN

Protocols OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant Operating Temperature Range

0°C to +70°C

Key Features of LINK-PP LQ-CW40-LR4C 40G QSFP+

This advanced 40G optical module boasts outstanding features tailored for modern networking demands. Equipped with robust DFB lasers and PIN receivers, the transceiver guarantees superior signal integrity. It provides low power consumption, excellent electromagnetic interference shielding, and steadfast compliance with IEEE 802.3ba industry standards.

LINK-PP LQ-CW40-LR4C 40G QSFP+ Optical Module

Engineered for durability, this high-performance QSFP+ optical module features a rugged metal housing for optimal thermal dissipation. The pluggable 40G transceiver guarantees stable optical data transmission, making it an essential component for high-density routing and switching applications.

LQ-CW40-LR4C: 40G Connectivity for Spine-to-Leaf Links

Designed to optimize modern data center architectures, this module delivers robust 40G connectivity for spine-to-leaf switch links. It effortlessly handles massive data throughput, ensuring ultra-low latency and seamless communication across demanding cloud computing and enterprise network environments.

LQ-CW40-LR4C Module with CWDM4 Technology for Fiber Efficiency

Utilizing advanced Coarse Wavelength Division Multiplexing (CWDM4) technology, this efficient 40G transceiver multiplexes four optical lanes into a single fiber pair. This innovative design significantly maximizes fiber utilization, reducing cabling infrastructure costs for expansive optical network deployments.

LQ-CW40-LR4C Module with 1271nm, 1291nm, 1311nm, 1331nm Wavelength

Operating on standardized CWDM grids, the module transmits data flawlessly across 1271nm, 1291nm, 1311nm, and 1331nm center wavelengths. This uncooled DFB laser array configuration prevents signal crosstalk, ensuring highly accurate and reliable optical multiplexing during intensive data transfers.

LQ-CW40-LR4C Module Supporting 10km Transmission

Engineered for long-reach networking, this 40GBASE-LR4 transceiver flawlessly supports extended transmission distances up to 10km over standard single-mode fiber (OS1/OS2). It provides an ideal connectivity solution for campus-wide backbones, metro networks, and inter-datacenter communication links.

LQ-CW40-LR4C Module with Duplex LC Interface

Equipped with a standard duplex LC optical interface, this hot-pluggable module allows for quick, secure, and precise fiber patch cord connections. The widely compatible LC connector design ensures effortless physical installation and minimizes optical insertion loss.

LQ-CW40-LR4C Module with DOM for Real-Time Monitoring

Featuring built-in Digital Optical Monitoring (DOM) capabilities, this smart transceiver allows network administrators to proactively track real-time operational parameters. You can easily monitor vital metrics like operating temperature, laser bias current, voltage, and optical power levels.


LINK-PP LQ-CW40-LR4C 40G QSFP+ Certification

LINK-PP prioritizes exceptional product safety and industry compliance. Our 40G QSFP+ optical modules undergo rigorous validation to meet strict international manufacturing and environmental regulatory standards.

Optical Transceivers Testing

Every optical transceiver participates in a comprehensive quality assurance testing program. This strict multi-stage evaluation guarantees zero defects, ensuring continuous high-speed performance in demanding data center environments.

LQ-CW40-LR4C Quality Certifications

This premium 40G module proudly holds essential global quality certifications, including CE, FCC, UKCA, UL, and RoHS compliance, guaranteeing environmental safety and premium electromagnetic interference standards.

LQ-CW40-LR4C Certified for Reliable Host-Device Compatibility

Extensively certified for flawless host-device compatibility, this interoperable transceiver works seamlessly with major OEM networking switches and routers, preventing frustrating vendor lock-in and minimizing deployment risks.


Rigorous Testing Ensures Reliable QSFP+ Performance

We subject our network transceivers to meticulous hardware evaluations, ensuring each 40G module delivers unmatched signal integrity and consistent long-term networking stability.

Optical

Optical Spectrum Test

Confirms highly precise CWDM center wavelengths and stringent spectral width compliance for error-free multiplexing.

Optical

Eye Pattern Test

Verifies optimal optical transmission quality, low jitter, and excellent signal integrity across all lanes.

Optical

Bit Error Rate Test

Guarantees ultra-low data packet loss and flawless 40G Ethernet transmission reliability under heavy traffic.

Optical

Temperature Test

Ensures the commercial-grade optical module operates flawlessly between 0°C and 70°C without thermal degradation.


Product Shipping for LINK-PP LQ-CW40-LR4C 40G QSFP+

We provide secure, streamlined, and highly efficient global shipping solutions to ensure your vital optical networking components arrive swiftly and in perfect condition.

Anti-Static Protective Packaging

Anti-Static Protective Packaging

Individually sealed in premium ESD bags to prevent electrostatic discharge damage completely.

Shock-Resistant Transport Protection

Shock-Resistant Transport Protection

Encased in customized impact-absorbing foam trays for maximum physical transit security.

Fast Order Processing and Dispatch

Fast Order Processing and Dispatch

Efficient warehouse fulfillment ensures your telecommunication equipment orders are shipped out rapidly.

Global Logistics and International Delivery

Global Logistics and International Delivery

Partnered with reliable international couriers for expedited and trackable worldwide door-to-door delivery.

LINK-PP LQ-CW40-LR4C 40G QSFP+ Usage Demonstration

Installing the LINK-PP 40GBASE-LR4 transceiver is a simple plug-and-play process. Carefully insert the QSFP+ module into the compatible switch port until it clicks, then attach the duplex LC single-mode fiber patch cable to establish an instant high-speed connection.

LQ-CW40-LR4C Technical Support

LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.

Pre-Sales Technical Consultation

Pre-Sales Technical Consultation

Professional technical guidance to help customers select the most suitable LQ-CW40-LR4C modules based on network architecture and application requirements.

Compatibility Verification Support

Compatibility Verification Support

Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.

Deployment & Installation Assistance

Deployment & Installation Assistance

Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.

Long-Term Technical Assurance

Long-Term Technical Assurance

Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.

LINK-PP LQ-CW40-LR4C 40G QSFP+ After-Sales Assurance

LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.

15 days

15-day no-reason return and refund

Free maintenance or replacement

Free replacement for dead-on-arrival (DOA) or defective items within the initial period

Free maintenance

 Free repair services for manufacturing defects throughout the warranty period

Limitations

Warranty exclusions and conditions apply

Model Comparison Table

LINK-PP

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J***z
Finland
Verified Purchase
5 .0
2026-06-04
Exact 40G QSFP+ specs as advertised.
C***s
United Kingdom
Verified Purchase
5 .0
2026-06-03
Excellent fiber transceiver for enterprise routing.
S***l
Hong Kong
Verified Purchase
5 .0
2026-05-23
Highly reliable Duplex LC 40G module.
C***n
Italy
Verified Purchase
5 .0
2026-04-30
Works perfectly with my Brocade switch!
K***n
Czech Republic
Verified Purchase
5 .0
2026-03-18
Unbeatable price for QSFP+ LR4 modules.
J***s
Switzerland
Verified Purchase
5 .0
2026-02-01
Smooth 40Gbps throughput. Love the plug-and-play duplex LC interface for our NAS setup.
C***n
Denmark
Verified Purchase
5 .0
2025-10-25
Flawless 40GBASE-LR4 QSFP+ module.
C***g
Colombia
Verified Purchase
5 .0
2025-10-20
Top-tier 40G SMF optic. The 1271-1331nm CWDM4 tech is super efficient for cabling.
N***s
Argentina
Verified Purchase
5 .0
2025-09-02
Upgrading spine-to-leaf links was a breeze. These duplex LC transceivers run cool under 70°C limits. The DDM monitoring is incredibly precise across our Juniper switches. Highly recommend for B2B procurement.
A***r
Finland
Verified Purchase
5 .0
2025-08-22
DDM functionality works right out the box.
C***s
Dominican Republic
Verified Purchase
5 .0
2025-08-14
Passed all loopback tests. Excellent 10km transmission distance for our business network.
J***s
Malaysia
Verified Purchase
5 .0
2025-07-17
Excellent wholesale pricing. This 40G QSFP+ 10km module saved our IT budget massively.
B***n
United States
Verified Purchase
5 .0
2025-07-09
Good budget 40G optic for NAS.
L***z
Ecuador
Verified Purchase
5 .0
2025-07-04
Bought these for Palo Alto firewalls. 100% compatible and runs at optimal temps. ❄️
S***g
Ethiopia
Verified Purchase
5 .0
2025-06-25
Perfect for our indoor cabinet. 0-70C temp range is plenty for our AC-cooled room.
R***s
Argentina
Verified Purchase
4 .0
2025-06-05
Box arrived squished, but this Cisco compatible 40G transceiver works perfectly in our rack.
D***l
Malaysia
Verified Purchase
5 .0
2025-05-21
Solid 10km transceiver for SMF.
E***g
Italy
Verified Purchase
4 .0
2025-04-07
Shipping delayed by two days. Still, a solid 10km SMF LC optic with accurate DOM.
D***l
Japan
Verified Purchase
5 .0
2025-03-13
Great cheap 40G optical module for UK datacenters. DDM stats are spot on.
R***d
Taiwan, Province of China
Verified Purchase
5 .0
2025-02-15
I am happy that I was able to find reasonably priced Optical Transceiver Module in Link-pp.
K***e
Portugal
Verified Purchase
5 .0
2025-02-06
Reliable 40G QSFP+ module for single-mode fiber. Linked right up with our HPE switches!
M***l
Mexico
Verified Purchase
5 .0
2025-01-25
Tested these 40G QSFP+ modules for our campus fiber network upgrade. Flawless Arista compatibility and the CWDM4 wavelengths maintain stable 10km links. Great cost-effective solution for massive datacenter deployments!
M***s
Dominican Republic
Verified Purchase
5 .0
2025-01-09
Solid OEM compatible 1310nm QSFP+ for our base station backhaul. The DFB transmitters are rock stable. Easily handles intensive 40G Ethernet traffic without overheating in our indoor server cabinets.
B***i
Cambodia
Verified Purchase
5 .0
2025-01-06
Nice product and well packaged.
M***R
United States
Verified Purchase
5 .0
2024-12-31
Very Fast shopping process.Everything went well and I'll order again.
J***n
Costa Rica
Verified Purchase
5 .0
2024-12-22
Great Cisco compatible optic. Fast link! ⚡
M***g
United Kingdom
Verified Purchase
5 .0
2024-12-14
Compatible with my switch and it is just what I need.
C***g
Kenya
Verified Purchase
5 .0
2024-10-26
We deployed 50+ of these 40GBASE-LR4 optics for our corporate WAN. Perfect interoperability with Dell Force10 and Extreme gear. Zero packet loss on single-mode fiber over 8km. Excellent TCO overall.
J***o
Sweden
Verified Purchase
5 .0
2024-10-19
Pleasantly surprised!! Great store. I will do business with them again. Good prices and quick ship!!
F***i
United States
Verified Purchase
5 .0
2024-10-16
LINK-PP has an easy to browse website with great prices and excellent customer service. Every interaction that I have had with LINK-PP has been smooth and hassle free. Would definitely reccomend to friends and family!
M***s
Czech Republic
Verified Purchase
5 .0
2024-10-15
Stable 40G link on single-mode fiber.
C***d
United States
Verified Purchase
5 .0
2024-10-11
Very happy with the speed of delivery, unlike others, and accuracy of order. Will buy from them again.
E***z
Hong Kong
Verified Purchase
5 .0
2024-09-30
I just placed an order with 50 pcs 10G Sfp Cage. You guys shipped them to me in the same day. Actually it's really urgent for me and I appreciate your Fast shipment. Will order it continually for my projects.
A***s
Israel
Verified Purchase
5 .0
2024-08-27
It arrived in good order and was what I expected and ordered.
C***n
United States
Verified Purchase
5 .0
2024-08-11
No issues. Everything arrived on time as advertised.
R***n
Hong Kong
Verified Purchase
5 .0
2024-08-09
Great price for product and shipping. Fast shipping. Will shop again!
H***n
United States
Verified Purchase
5 .0
2024-06-15
In these days of web ordering with faceless automation it was a fresh breeze to get a human behind my order. The order was Fast.
L***u
South Africa
Verified Purchase
5 .0
2024-06-01
These ethernet port are awesome. Support has been great with everyone at LINK-PP. They are Fast to respond and are very helpful with all of your questions. Thank you!
S***r
United Kingdom
Verified Purchase
5 .0
2023-12-17
It is always a pleasure to purchase from l-p.com. Their website is easy and friendly to use and the products have great descriptions and always accurately show. Customer service is the best I've experienced..
S***g
Russian Federation
Verified Purchase
5 .0
2023-10-05
Great price, great product!
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