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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 |
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.
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.
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.
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.
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.
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.
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.
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 prioritizes exceptional product safety and industry compliance. Our 40G QSFP+ optical modules undergo rigorous validation to meet strict international manufacturing and environmental regulatory standards.
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.
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.
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.
We subject our network transceivers to meticulous hardware evaluations, ensuring each 40G module delivers unmatched signal integrity and consistent long-term networking stability.
Confirms highly precise CWDM center wavelengths and stringent spectral width compliance for error-free multiplexing.
Verifies optimal optical transmission quality, low jitter, and excellent signal integrity across all lanes.
Guarantees ultra-low data packet loss and flawless 40G Ethernet transmission reliability under heavy traffic.
Ensures the commercial-grade optical module operates flawlessly between 0°C and 70°C without thermal degradation.
We provide secure, streamlined, and highly efficient global shipping solutions to ensure your vital optical networking components arrive swiftly and in perfect condition.
Individually sealed in premium ESD bags to prevent electrostatic discharge damage completely.
Encased in customized impact-absorbing foam trays for maximum physical transit security.
Efficient warehouse fulfillment ensures your telecommunication equipment orders are shipped out rapidly.
Partnered with reliable international couriers for expedited and trackable worldwide door-to-door delivery.
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.
LINK-PP provides professional technical support, including pre-sales consultation, compatibility verification, and post-deployment troubleshooting to ensure smooth network operation.
Professional technical guidance to help customers select the most suitable LQ-CW40-LR4C modules based on network architecture and application requirements.
Compatibility checks and validation to ensure seamless operation with Cisco switches and other supported networking platforms.
Step-by-step support for installation, configuration, and initial deployment to ensure stable and correct operation.
Ongoing technical support throughout the product lifecycle to ensure reliable performance in enterprise and carrier-grade networks.
LINK-PP provides after-sales support for the smooth deployment and reliable operation of the optical modules.
15-day no-reason return and refund
Free replacement for dead-on-arrival (DOA) or defective items within the initial period
Free repair services for manufacturing defects throughout the warranty period
Warranty exclusions and conditions apply
Compatible | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP | LINK-PP |
Data Rate (Max) | 40Gbps | 40Gbps | 40Gbps | 40Gbps | 40Gbps | 40Gbps |
Wavelength | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1271nm, 1291nm, 1311nm, 1331nm | 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm | 1295.56nm, 1300.05nm, 1304.58nm, 1309.14nm |
Connector | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC | Duplex LC |
Cable Distance (Max) | 10km | 20km | 2km | 40km | 80km | 60km |
Cable Type | SMF | SMF | SMF | SMF | SMF | SMF |
Operating Temperature | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C | 0°C to +70°C |
Form Factor | QSFP+ | QSFP+ | QSFP+ | QSFP+ | QSFP+ | QSFP+ |
Transmitter Type | DFB | DFB | DFB | DFB | EML | DFB |
Receiver Type | PIN | PIN | PIN | APD | APD | APD |
Protocols | OTN OTU3, 40G Ethernet, Fiber Channel, SATA/SAS3, MSA Compliant | QSFP+ MSA, SFF-8436 | 40G Ethernet, Fibre Channel, SATA/SAS3, MSA Compliant | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant | QSFP+ MSA, IEEE 802.3ba Compliant | OTN OTU3, 40G Ethernet, SATA/SAS3, MSA Compliant |
| Pictures | ID# | Description | Price | Stock | Add to Cart |
Q: I’m looking to outfit an entire server room and need about 200 of these 40G QSFP+ modules. Do you offer tier pricing or wholesale discounts for bulk corporate procurement? By J***t on 2026-04-09
A: Yes, we provide aggressive volume discounts for B2B clients! For a bulk purchase of 200 units, you will receive a significant price reduction compared to the single-unit cost shown. Reach out to our sales engineering team directly for a customized quote. By admin on 2026-04-09
Q: We use a mix of Cisco Nexus and Arista switches in our data center. Will this 40GBASE-LR4 module interoperate seamlessly without throwing third-party warning logs? By J***n on 2026-03-17
A: Absolutely. This QSFP+ module is thoroughly tested for OEM compatibility across major brands like Cisco, Arista, and Juniper. It's entirely plug-and-play and will integrate smoothly without triggering unsupported transceiver warnings. By admin on 2026-03-17
Q: We are on a tight schedule for a campus fiber network rollout next month. Are these 1310nm 10km modules in stock, and what’s your typical delivery cycle to Europe or the US? By M***l on 2026-02-10
A: We maintain a large, stable supply chain and keep extensive inventory of these standard 40G LR4 optics. Orders are typically processed within 24 hours, and expedited global shipping usually takes just 2 to 5 business days, ensuring you meet critical project deadlines. By admin on 2026-02-10
Q: Is this transceiver fully compliant with IEEE 802.3ba and standard MSA specifications? I need to ensure it meets strict industry compliance for our federal contracts. By T***l on 2025-10-25
A: Yes, the LQ-CW40-LR4C strictly complies with the IEEE 802.3ba 40GBASE-LR4 standard and all QSFP+ MSA specifications. It is also fully RoHS compliant, fulfilling the rigorous regulatory and operational demands of global enterprise and government deployments. By admin on 2025-10-25
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