The LINK-PP LQ-M31400-DR4C is a high-performance 400G QSFP112 DR4 optical transceiver compliant with IEEE 802.3bs 400GBASE-DR4 and IEEE 802.3ck 400GAUI-4 standards. Operating at a 1310nm central wavelength, this QSFP112 Type 2 module integrates 4-channel 100G PAM4 EML lasers and PIN receivers, delivering aggregate 400Gbps transmission up to 500m over single-mode fiber with under 10W power consumption.
LINK-PP Part Number
LQ-M31400-DR4C
Vendor Name
LINK-PP
Form Factor
QSFP112
Max Data Rate
425Gbps (4x106.25Gb/s)
Wavelength
1310nm
Max Cable Distance
500m
Connector
MPO-12/APC
Media
SMF
Transmitter Type
EML
Receiver Type
PIN
Modulation (Electrical)
4x100G-PAM4
Modulation (Optical)
4x100G-PAM4
DDM/DOM
Supported
Operating Temperature Range
0°C to +70°C
Protocols
QSFP112 MSA, CMIS 5.0, IEEE Std 802.3ck
Warranty
5 Years
Key Features of LINK-PP LQ-M31400-DR4C 400G QSFP112
Designed for next-generation networks, the LINK-PP LQ-M31400-DR4C 400G QSFP112 optical transceiver features CMIS 5.0 management, QSFP112 MSA Rev 2.0 compliance, an MPO-12/APC interface, and low 10W maximum power dissipation. Its integrated 4x100G PAM4 optical lanes ensure seamless interoperability, energy efficiency, and superior signal integrity across high-density computing environments.
The LINK-PP LQ-M31400-DR4C 400G QSFP112 optical module converts 4-lane 100Gbps PAM4 electrical inputs into parallel 1310nm optical outputs, enabling compact, high-density 400GbE aggregation with maximum thermal stability and low bit error rates in modern infrastructures.
LQ-M31400-DR4C: 400G Connectivity for Data Center Interconnect
Engineered for high-bandwidth leaf-spine architectures, the LQ-M31400-DR4C delivers robust 400G connectivity for cloud data center interconnects, AI cluster fabrics, and enterprise switches, ensuring ultra-low latency and scalable bandwidth across mission-critical networks.
LQ-M31400-DR4C Module with 1310nm Wavelength
Utilizing an uncooled 1310nm EML transmitter array spanning 1304.5nm to 1317.5nm, the LQ-M31400-DR4C module provides exceptional chromatic dispersion performance and high extinction ratios, maintaining crisp optical eye diagrams across four parallel lanes.
Supporting reach up to 500m (0.5km) over standard OS2 single-mode fiber (SMF) with host-side FEC, the LQ-M31400-DR4C module provides reliable, cost-effective short-reach optical interconnect solutions for dense campus and intra-datacenter fabrics.
LQ-M31400-DR4C Module with MPO-12/APC Interface
Fitted with an industry-standard MPO-12/APC optical receptacle featuring an 8-degree angled end-face, the LQ-M31400-DR4C module significantly suppresses optical return loss and back-reflection to optimize PAM4 signal integrity and transceiver lifespan.
LQ-M31400-DR4C Module with DOM for Real-Time Monitoring
Equipped with CMIS 5.0 compliant Digital Optical Monitoring (DOM), the LQ-M31400-DR4C module provides real-time diagnostic telemetry for operating temperature, supply voltage, laser bias currents, and transmitted/received optical power to maximize network reliability.
LINK-PP LQ-M31400-DR4C 400G QSFP112 Certification
The LINK-PP LQ-M31400-DR4C 400G QSFP112 optical transceiver is manufactured in ISO9001 certified facilities and complies with international safety, electromagnetic compatibility, and global environmental protection standards worldwide.
Every LQ-M31400-DR4C transceiver undergoes rigorous automated end-to-end quality screening, including multi-temperature stress tests, accelerated aging, and strict optical parameter calibration, guaranteeing flawless 400G enterprise network reliability.
LQ-M31400-DR4C Quality Certifications
Fully certified to CE, FCC Class B, UKCA, UL, RoHS 2.0, and REACH standards, the LQ-M31400-DR4C ensures superior environmental safety, minimal electromagnetic emissions, and long-term regulatory compliance.
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.
LQ-M31400-DR4C Certified for Reliable Host-Device Compatibility
The LQ-M31400-DR4C module is certified and comprehensively tested across mainstream brand switches, routers, and host servers, delivering plug-and-play CMIS 5.0 interoperability without operational configuration barriers.
LINK-PP employs comprehensive hardware validation protocols to ensure every LQ-M31400-DR4C QSFP112 optical module delivers robust PAM4 signal integrity, durability, and superior enterprise performance.
Optical Spectrum Test
Precision optical spectrum analyzers verify 1310nm central wavelength accuracy and side-mode suppression ratio specifications.
Eye Pattern Test
High-speed sampling oscilloscopes evaluate TDECQ, eye height, and extinction ratio for flawless PAM4 transmission.
Bit Error Rate Test
Automated BERT systems validate pre-FEC bit error ratios to ensure error-free 400G data communication.
Temperature Test
Thermal chamber cycling confirms stable optical performance across commercial operating ranges from 0°C to 70°C.
Product Shipping for LINK-PP LQ-M31400-DR4C 400G QSFP112
LINK-PP guarantees secure global distribution for the LQ-M31400-DR4C 400G QSFP112 optical transceiver through industrial-grade packaging, strict electrostatic controls, and expedited worldwide logistics services.
Anti-Static Protective Packaging
Each module is sealed inside ESD-safe clamshell packaging to prevent electrostatic damage.
Shock-Resistant Transport Protection
Reinforced outer cartons and high-density cushioning foam absorb mechanical impacts during transit.
Fast Order Processing and Dispatch
Streamlined fulfillment workflows ensure fast dispatch and reliable tracking for every order.
Global Logistics and International Delivery
Partnered with top international carriers to provide prompt door-to-door worldwide delivery.
Installing the hot-pluggable LINK-PP LQ-M31400-DR4C 400G QSFP112 optical module is straightforward: insert the module firmly into any compatible QSFP112 port until latched, connect an MPO-12/APC single-mode patch cable, and verify automated CMIS link initialization on your switch console.
LQ-M31400-DR4C 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 LQ-M31400-DR4C 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:
The standard LQ-M31400-DR4C is indeed optimized for commercial indoor environments (0-70°C). However, we can provide customized industrial wide-temperature transceiver solutions upon request. Just contact our technical support team with your specific environmental requirements. By
admin on
2026-08-28
A:
You will need an MPO-12/APC (Angled Physical Contact) connector, which features an 8-degree angled end-face to minimize optical back-reflection. It operates perfectly over standard OS2 Single Mode Fiber (SMF) to reliably achieve the maximum 500m transmission distance at 400G. By
admin on
2026-06-15
A:
Yes, it delivers 100% equivalent performance. You get identical 4x100G PAM4 optical lanes, EML/PIN transmission quality, and real-time DOM monitoring for a fraction of the cost. It is a highly cost-effective substitute for large-scale enterprise data center rollouts. By
admin on
2026-04-17
A:
Absolutely! The LQ-M31400-DR4C is strictly compliant with QSFP112 MSA and CMIS 5.0 protocols. We conduct rigorous multi-brand switch compatibility tests to ensure plug-and-play operation for both Cisco and Arista environments without any vendor lock-in errors. By
admin on
2026-03-13
Tested this 400G QSFP112 DR4 in our lab using MPO-12/APC OS2 fiber. The EML/PIN combo keeps error rates low, and CMIS 5.0 diagnostics integrate beautifully with our network monitoring tools.
Please write comments with more than three
character.
495036
463073
K***l
Netherlands
Verified
Purchase
5 .0
2026-07-24
Excellent DDM/DOM readout for troubleshooting optical power. Used this 1310nm 400G MPO-12 module for indoor data center interconnections. It delivers pristine PAM4 eye diagrams and massive cost reductions!
Please write comments with more than three
character.
495036
463088
A***n
Colombia
Verified
Purchase
5 .0
2026-07-21
Upgraded our core campus network to 400GbE. The 500m reach on single-mode fiber is more than enough. Seamless QSFP112 MSA compliance with both Arista and Nvidia multi-brand switches.
Please write comments with more than three
character.
495036
463080
C***s
Denmark
Verified
Purchase
5 .0
2026-04-25
We ordered a batch of these 400G transceivers for AI cluster backhaul in our main datacenter. Pulling under 10W per module at 70°C peak load is impressive. Great Cisco alternative!
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