The Intel QDD-FR4-400G Compatible LINK-PP module is a commercial-grade 400G QSFP-DD optical transceiver engineered for high-density networking. Compliant with 400GBASE-FR4 standards, it utilizes 8x53.125Gb/s PAM4 electrical lanes and 4x106.25Gb/s optical channels. It features an integrated EML laser, a PIN receiver, and a duplex LC connector, delivering stable 400Gbps aggregation over single-mode fiber with a maximum power consumption under 10W.
Intel Part Number
QDD-FR4-400G
Vendor Name
LINK-PP
Form Factor
QSFP-DD
Max Data Rate
400Gbps
Connector
Duplex LC
Media
SMF
Wavelength
1271nm, 1291nm, 1311nm, 1331nm
Max Cable Distance
2km
Transmitter Type
CWDM EML
Receiver Type
PIN
Max Power Consumption
9.5W
Protocols
IEEE 802.3bs, QSFP-DD MSA
DDM/DOM
Supported
Operating Temperature range
0°C to +70°C
Key Features of Intel QDD-FR4-400G Compatible LINK-PP 400G QSFP-DD
This hot-pluggable QSFP-DD transceiver offers high port density and low power consumption for modern networks. Leveraging advanced 4-level pulse amplitude modulation, it integrates digital optical monitoring for comprehensive performance tracking. It provides cost-effective, high-bandwidth interconnectivity with broad third-party host compatibility.
The Intel QDD-FR4-400G Compatible LINK-PP optical module offers a reliable, plug-and-play solution for upgrading hardware to 400G. Designed for robust data aggregation, it minimizes footprint while maintaining superior thermal dissipation in high-density switch environments.
QDD-FR4-400G: 400G Connectivity for Cloud Data Centers
Tailored for next-generation cloud infrastructure, the QDD-FR4-400G delivers hyperscale bandwidth to handle massive traffic demands. It bridges spine-and-leaf switches efficiently, ensuring ultra-low latency and consistent throughput required for modern AI and enterprise cloud environments.
QDD-FR4-400G Module with CWDM Technology for Fiber Efficiency
By incorporating integrated Coarse Wavelength Division Multiplexing technology, this module multiplexes four distinct channels onto a single fiber pair. This architecture dramatically reduces cabling complexity and optimizes existing fiber infrastructure capital expenditures.
QDD-FR4-400G Module with 1271nm, 1291nm, 1311nm, 1331nm Wavelength
Operating on four precise CWDM grid wavelengths of 1271nm, 1291nm, 1311nm, and 1331nm, the module minimizes optical crosstalk. This specific wavelength configuration guarantees clean grid spacing and optimized signal integrity over single-mode links.
QDD-FR4-400G Module Supporting 2km Transmission
Engineered for localized reach, this transceiver supports error-free link distances up to 2km using standard G.652 single-mode fiber. It serves as the ideal reach-optimized solution for intra-datacenter interconnects and campus backbone wiring.
QDD-FR4-400G Module with Duplex LC Interface
Featuring an industry-standard duplex LC optical interface, this module enables secure, tactile fiber patching. The standard LC connector format ensures seamless integration with legacy patch panels, clean mating interfaces, and low insertion loss.
QDD-FR4-400G Module with DOM for Real-Time Monitoring
Equipped with built-in Digital Optical Monitoring via the CMIS interface, network administrators can track diagnostics in real time. The module continuously reports internal temperature, supply voltage, laser bias current, and received optical power levels.
This transceiver holds complete international regulatory approvals, satisfying rigorous global standards for electronic products. It complies fully with standard multi-source agreements, ensuring safe, law-compliant deployment across global network infrastructures.
LINK-PP subjects every single transceiver to a comprehensive multi-stage validation pipeline. Technicians rigorously verify every parameter, ensuring that each module leaves the factory performing at peak physical and optical excellence.
QDD-FR4-400G Quality Certifications
Manufactured under strict ISO9001 quality management guidelines, this module holds CE, FCC, and RoHS environmental certifications. These credentials guarantee toxic-free materials, electromagnetic safety compliance, and long-term operating reliability.
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.
QDD-FR4-400G Certified for Reliable Host-Device Compatibility
Extensive hardware interoperability matrices certify this transceiver for seamless use with major switch and router vendors. It guarantees immediate host recognition, eliminating system faults or communication lockouts upon installation.
Every QDD-FR4-400G module undergoes strict parametric validation. Our comprehensive testing protocol ensures optimal data transmission, mechanical integrity, and absolute reliability under maximum network workloads.
Optical Spectrum Test
Precision spectrum analysis verifies correct CWDM central wavelengths and side-mode suppression ratios.
Thermal chamber cycling validates commercial-grade stability across variable operating environments from 0°C to 70°C.
Product Shipping for Intel QDD-FR4-400G Compatible LINK-PP 400G QSFP-DD
We implement specialized logistic workflows and standardized defensive packaging for all transit. Your modules arrive safely, secured against environmental hazards and transportation stresses, ready for deployment.
Anti-Static Protective Packaging
Each module is sealed inside a premium ESD-safe anti-static blister package.
Shock-Resistant Transport Protection
Heavy-duty cushioned outer boxes shield the optics from accidental drops and vibrations.
Fast Order Processing and Dispatch
Streamlined warehousing ensures swift verification, rapid packaging, and prompt courier handover.
Global Logistics and International Delivery
Partnering with leading express carriers guarantees rapid, tracked delivery to any worldwide destination.
This application showcase demonstrates the simple hot-swapping installation of the transceiver into standard high-density 400G enterprise switches. Watch how the host system instantly discovers the module, initiates the DOM link diagnostics, and establishes a stable 2km fiber link.
QDD-FR4-400G 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 QDD-FR4-400G 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:
Absolutely! The LQD-CW400-FR4C is fully OEM-compatible and coded to support Cisco, Arista, and other major networking brands like Juniper and Mellanox. You can deploy it confidently in mixed-switch environments without triggering compatibility errors. By
admin on
2026-02-17
A:
Yes! This 400G QSFP-DD optical module features an industry-standard Duplex LC interface. It is fully compatible with standard OS2 single-mode fiber (SMF) and supports transmission distances up to 2km utilizing 1310nm CWDM4 wavelengths. By
admin on
2025-08-27
A:
Yes, we provide competitive tiered pricing for enterprise B2B customers. For an order of 200 pieces of our 400G QSFP-DD modules, you'll receive a significant bulk discount over the standard unit price. Please contact our live sales team for a custom quote! By
admin on
2025-06-21
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472198
386435
K***z
Italy
Verified
Purchase
5 .0
2026-04-11
Evaluated this 400G optical transceiver module against expensive OEM brands for our Toronto high-speed NAS storage backend. The 1271-1331nm multiplexing is efficient, and it handles our continuous 400Gbps traffic without thermal throttling.
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472198
386439
L***z
Portugal
Verified
Purchase
5 .0
2026-01-03
Tested these 400G QSFP-DD 1310nm transceivers for high-density 400Gbps aggregation in our Texas data center. The 9.5W power draw is efficient, and the 4x106.25Gb/s PAM4 lanes deliver stable throughput. Outstanding B2B value.
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472198
386437
D***s
Germany
Verified
Purchase
5 .0
2025-05-10
Deployed these LINK-PP 400G FR4 optics for our Chicago spine-leaf architecture. Flawless Arista compatibility and the CWDM EML transmitter keeps signal integrity solid over 1.5km SMF. DOM monitoring is highly accurate!
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472198
386436
C***n
Thailand
Verified
Purchase
5 .0
2025-05-08
We procured a batch for our European campus fiber network upgrade. The IEEE 802.3bs compliance ensures smooth interoperability with Mellanox adapters. LC connectors feel premium, and 2km reach covers our inter-building links perfectly.
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472198
386422
M***n
Poland
Verified
Purchase
5 .0
2023-01-29
My first experience with you guys. Was very pleased. Prices were excellent. I was REALLY happy with the customer service. Fast and reliable. I'll shop at the site again definitely.
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472198
386429
r***g
Netherlands
Verified
Purchase
5 .0
2022-10-14
Yes you can get this item for much cheaper elsewhere but who knows what kind of quality you\'re gonna be getting. And replacing that part and dealing network problems from low quality parts will cost you much more in the long run.
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472198
386428
J***e
Indonesia
Verified
Purchase
5 .0
2022-05-20
I just placed my second order with LINK-PP and have been extremely impressed by the service. Orders are filled quickly and the prices are far better than ordering directly from local stores.
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472198
386419
K***g
United States
Verified
Purchase
5 .0
2022-03-02
Guess what: they worked right away, from the moment I put them in the switch!
So I am happy. Happy that the ethernet port are the right ones, happy with you handling my case and happy with LINK-PP as a company with such a great customer care.
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472198
386430
M***e
Spain
Verified
Purchase
5 .0
2022-02-13
I was impressed by how easy it was to order and helpfulness of frontline staff, when I needed to change the delivery address to arrive upstate at a business function.
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