The Arista QSFP-40G-LR4-20 Compatible LINK-PP module is a high-performance 40G QSFP+ transceiver designed for long-reach networking. Compliant with IEEE 802.3ba 40GBASE-LR4 and SFF-8436 standards, this single mode optical module ensures superior data transmission. It features a robust hot-pluggable design, supporting an impressive 40Gbps data rate to meet the demanding specifications of modern data center interconnects.
Arista Part Number
QSFP-40G-LR4-20
Vendor Name
LINK-PP
Form Factor
QSFP+
Max Data Rate
40Gbps
Wavelength
1271nm, 1291nm, 1311nm, 1331nm
Max Cable Distance
20km
Connector
Duplex LC
Media
SMF
Transmitter Type
DFB
Receiver Type
PIN
Operating Temperature Range
0°C to +70°C
Protocols
QSFP+ MSA, SFF-8436
Host FEC
Supported
Power Supply
+3.3V
Key Features of Arista QSFP-40G-LR4-20 Compatible LINK-PP 40G QSFP+
Discover the superior capabilities of this commercial grade optical transceiver. The hot-pluggable QSFP+ design allows seamless network upgrades without system downtime. Operating efficiently with low power consumption under 3.5W and a 3.3V power supply, it guarantees stable, high-speed connectivity for enterprise networks.
This premium 40G optical module utilizes the widely adopted QSFP+ form factor to deliver exceptional network bandwidth. Engineered for single mode fiber applications, it provides reliable and cost-effective optical communication solutions tailored for high-speed Ethernet routing and switching environments.
QSFP-40G-LR4-20: 40G Connectivity for Infiniband QDR
Maximize your network throughput with seamless Infiniband QDR connectivity. This robust transceiver is meticulously optimized for high-performance computing networks, ensuring ultra-low latency and maximum data integrity across demanding enterprise server clusters and complex storage area network configurations.
QSFP-40G-LR4-20 Module with CWDM4 Technology for Fiber Efficiency
Utilizing advanced CWDM4 technology, this device maximizes fiber efficiency through sophisticated optical multiplexing. It seamlessly combines four distinct 10Gbps electrical channels into a single powerful 40Gbps optical stream, significantly reducing single mode fiber cabling costs and infrastructure complexity.
QSFP-40G-LR4-20 Module with 1271nm, 1291nm, 1311nm, 1331nm Wavelength
Engineered with a high-quality DFB laser and sensitive PIN detector, the module operates across four precise CWDM wavelengths: 1271nm, 1291nm, 1311nm, and 1331nm. This precision ensures excellent signal integrity and minimal dispersion during continuous high-bandwidth data transmission.
Experience extended network coverage with a remarkable 20km transmission distance. This long-reach optical link easily outperforms standard modules, making it the ideal solution for building resilient 40G campus links and connecting widely separated data centers over long distances.
QSFP-40G-LR4-20 Module with Duplex LC Interface
The transceiver is equipped with a standard duplex LC connector for secure and reliable fiber attachments. This universal SMF LC interface ensures broad hardware compatibility, allowing network administrators to effortlessly integrate the module into existing single mode fiber infrastructures.
QSFP-40G-LR4-20 Module with DDM for Real-Time Monitoring
Integrated Digital Diagnostic Monitoring provides critical real-time DDM data directly to system administrators. This intelligent feature tracks operating temperature, voltage, and optical power, empowering proactive optical network management and rapid troubleshooting to maintain continuous system uptime.
Our transceivers strictly adhere to comprehensive industry standard certifications. This rigorous global compliance ensures maximum safety, environmental protection, and unparalleled hardware reliability for your infrastructure.
Every unit undergoes a comprehensive quality testing program before shipment. This meticulous optical module inspection guarantees flawless performance, operational stability, and absolute defect-free manufacturing for all customers.
QSFP-40G-LR4-20 Quality Certifications
The product proudly holds CE FCC UKCA UL REACH approvals. Additionally, as a completely RoHS compliant transceiver, it meets strict environmental directives and Class I laser safety requirements.
This product is in conformity with ISO9001. This system is valid to a company engaging in development, production and supply service of fiber optical products. Please contact us to learn more.
ISO/IEC 27001 is an international standard for managing and processing information security. This standard is jointly developed by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It sets out requirements for establishing, implementing, maintaining, and continually improving an information security management system (ISMS). Ensuring the confidentiality, integrity, and availability of organizational information assets, obtaining an ISO 27001 certificate means that the enterprise has passed the audit conducted by a certification body, proving that its information security management system has met the requirements of the international standard. Please contact us to learn more.
This product is in conformity with ISO14001.It is intended for use by an organization seeking to manage its environmental responsibilities in a systematic manner that contributes to the environmental pillar of sustainability. Please contact us to learn more.
ISO 45001 is a global standard that sets out the requirements for an occupational health and safety management system (OH&SMS).
REACH is a European Union regulation concerning the Registration, Evaluation, Authorization and Restriction of Chemicals. It came into force on 1st June 2007 and replaced a number of European Directives and Regulations with a single system. The regulation aims to protect human health and environmental safety, maintain and improve the competitiveness of the EU chemical industry, and develop innovative capabilities for non-toxic and harmless compounds to prevent market fragmentation, increase the transparency of the use of chemicals, promote non-animal experiments, and pursue sustainable social development.Please contact us to learn more.
This product meets the applicable requirements of Directive (EU) 2015/863 of RoHS. It restricts the use of 10 hazardous materials in the manufacture of various types of electronic and electrical equipment: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers, and four different phthalates. Please contact us to learn more.
This product fully accords with the FCC, which aims to manage the radio wave and magnetic fields more reasonably. Please contact us to learn more.
CB is an international system operated by IECEE. This product is based on IEC standards for testing the safety performance of electrical products. Please contact us to learn more.
This product fully accords with UKCA (UK Conformity Assessed) certificate, which signifies that it meets all relevant quality standards as well as health and safety requirements. Please contact us to learn more.
UL certification is a non-mandatory certification in the United States,mainly testing and certification of product safety performance.Its ultimate purpose is to obtain products with a fairly safe level for the market,and to contribute to ensuring human health and property safety.Please contact us to learn more.
QSFP-40G-LR4-20 Certified for Reliable Host-Device Compatibility
Extensively tested for seamless network switch compatibility, this module ensures flawless multi-vendor interoperability. It establishes reliable connections across various routers, switches, and enterprise-grade host bus adapters seamlessly.
We conduct rigorous performance testing on every device to guarantee stable optical transmission, ensuring your network operates flawlessly under the most demanding conditions.
Optical Spectrum Test
Center wavelength verification ensures precise signal alignment and optimal CWDM multiplexing functionality.
Eye Pattern Test
Validates superior optical signal integrity for clean, error-free high-speed Ethernet data communications.
Bit Error Rate Test
Guarantees an exceptionally low bit error rate during continuous maximum-capacity bandwidth transmission.
Temperature Test
Confirms reliable stability across the complete commercial operating temperature range of 0°C to +70°C.
Product Shipping for Arista QSFP-40G-LR4-20 Compatible LINK-PP 40G QSFP+
We prioritize secure optical module shipping and partner with reliable logistics providers to deliver your critical network components safely and efficiently worldwide.
Anti-Static Protective Packaging
Premium ESD safe packaging prevents electrostatic discharge damage during transit.
Shock-Resistant Transport Protection
Specialized cushioning materials guarantee shockproof delivery for sensitive optical components.
Fast Order Processing and Dispatch
Experience rapid order fulfillment to meet your urgent network deployment schedules.
Global Logistics and International Delivery
Enjoy dependable worldwide express shipping directly to your data center facilities.
Simplify your infrastructure upgrades with effortless plug and play installation. During QSFP+ transceiver deployment, gently insert the module into the compatible switch port until it clicks, then connect the duplex LC single mode fiber for immediate, high-speed data transmission.
QSFP-40G-LR4-20 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
Professional technical guidance to help customers select the most suitable QSFP-40G-LR4-20 modules based on network architecture and application requirements.
Compatibility Verification Support
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Deployment & Installation Assistance
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Long-Term Technical Assurance
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
A:
You’re good to go with your standard LC cables! This transceiver uses a standard Duplex LC interface over Single Mode Fiber (SMF). It multiplexes the 4 wavelengths internally, completely eliminating the need for expensive 8/12-core MPO cabling. By
admin on
2026-03-17
A:
For extreme outdoor edge nodes, we highly recommend our industrial-grade line. While this LQ-CW40-L24C is perfect for standard indoor setups, you should check out our LQ-CW40-L24I models specifically engineered for harsh -40°C to 85°C environments! By
admin on
2026-02-20
A:
Yes! It strictly adheres to IEEE 802.3ba 40GBASE-LR4 and QSFP+ MSA standard protocols, supports Host FEC, and passes all global telecom compliance testing for safe, reliable data center interconnects. By
admin on
2026-02-17
A:
Hey there! Yes, absolutely. It's fully SFF-8436 MSA compliant and tested rigorously for cross-compatibility with Cisco, Arista, Juniper, and other major OEMs. You won't run into any vendor lock-in or interoperability issues. By
admin on
2025-10-21
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482456
387267
M***z
Italy
Verified
Purchase
5 .0
2025-05-31
Replaced some pricey OEM units with this 20km SMF module. DDM data shows stable 3.3V draw under load. Perfect for our bulk data center QSFP+ deployment, saving thousands on TCO without sacrificing reliability.
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482456
387249
S***z
Ethiopia
Verified
Purchase
5 .0
2024-12-10
Our team required a reliable Cisco compatible 40G link for an 18km base station backhaul. This 1310nm optical transceiver delivered ultra-low latency instantly. Truly a robust solution for large-scale enterprise routing and switching.
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character.
482456
387262
H***n
Russian Federation
Verified
Purchase
5 .0
2024-04-09
We had a large volume for 10/25/40G Transceiver Modules each month.always had good performance. This time our Account Manager told me that it had a big price reduction, so we purchased some more which can be used for six months. Surprisingly, we received the goods quickly. That's great.
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