Our enterprise requires strict adherence to networking standards. Is this module fully compliant with IEEE 802.3bs and the QSFP-DD MSA for high-density fiber cabling?

You’re fully covered. It complies seamlessly with IEEE 802.3bs, QSFP-DD MSA, and CMIS 4.0 specifications. The module ensures robust EMI resistance and exceptional optical signal integrity across all standard 400G cloud infrastructures.

We are planning a massive 400G hyperscale datacenter deployment and need around 500 units. Do you offer bulk volume discounts or any B2B tiered pricing for this QSFP-DD?

We definitely do! For high-volume batch orders, our wholesale pricing significantly lowers your per-unit cost. Just hit up our sales team via live chat or email, and we’ll prepare a custom quote to help maximize your IT procurement budget.

Hello sir, we run a mixed environment with Cisco Nexus and Arista switches. Will this LQD-M31400-DR4C module work flawlessly across both without throwing "unsupported transceiver" errors?

Yes, absolutely! This module is fully OEM compatible and can be flashed to support both Cisco and Arista simultaneously. It's truly plug-and-play, so you won't need to bypass any third-party transceiver warnings via CLI on your network switches.

Breadcrumb: Home; Products; Optic Transceivers | SFP Modules; 200/400/800G Transceiver Modules; 400G QSFP-DD/OSFP/QSFP112; 214639

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H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD 8 x 50G PAM4 1310nm 500m MPO-12/APC DOM SMF Optical Transceiver Module

Name: H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD 8 x 50G PAM4 1310nm 500m MPO-12/APC DOM SMF Optical Transceiver Module
Brand: LINK-PP
SKU: 214639
Price: 415.360 USD
Availability: InStock
Rating: 4.9 (17 reviews)

Product: H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD 8 x 50G PAM4 1310nm 500m MPO-12/APC DOM SMF Optical Transceiver Module
SKU: 214639
P/N: LQD-M31400-DR4C
Price: $ 472
Stock: 588 in Stock
Sold: 1.3K
Product URL: https://www.l-p.com/products/494477.htm

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

17 Reviews

3 Questions

1.3K Sold

$ 472

Free shipping. For wholesale pricing, please contact us directly.

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Manufacture: LINK-PP P/N: LQD-M31400-DR4C SKU: 214639

Compatible:: Cisco; LINK-PP; Arista; Broadcom; Ciena; Dell; EdgeCore; FS; Generic; H3C; HPE Aruba; HW; Intel; Juniper; NVIDIA/Mellanox

Compatible P/N:: QDD-SR4-400G | 50m; QSFPDD-400G-SR8-MM850 | 100m; QDD-DR4-400G | 500m; QDD-DR4-400G-Si | 500m; QSFP112-DR4-400G | 500m; QDD-XDR4-400G | 2km; QDD-PLR4-400G | 10km

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Estimated delivery time : 3 - 10 days.

5-Year Warranty 30-Day Returns 30-Day Exchange

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H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD Specifications

The H3C QDD-DR4-400G Compatible LINK-PP module is a high-performance 400G QSFP-DD DR4 optical transceiver designed for 500m single-mode fiber applications. Operating via an 8-channel 53.125Gb/s PAM4 electrical interface and a 4-channel 106.25Gb/s optical architecture , it features a single 3.3V power supply , a maximum power consumption of 9.5W , and integrated digital diagnostic monitoring functions.

H3C Part Number	QDD-DR4-400G	Vendor Name	LINK-PP
Form Factor	QSFP-DD	Max Data Rate	425Gbps
Wavelength	1310nm	Max Cable Distance	500m
Modulation Format	PAM4	Media	SMF
Connector	MPO-12/APC	Receiver Type	PIN
Modulation (Electrical)	8x50G-PAM4	Modulation (Optical)	4x100G-PAM4
DDM/DOM	Supported	Operating Temperature Range	0°C to +70°C
Protocols	QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs	Warranty	5 Years

Key Features of H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD

This cutting-edge module delivers compliant operation with IEEE Std 802.3bs, QSFP-DD MSA, and CMIS4.0 specifications. It boasts high-density integration , robust EMI resistance , hot-pluggable efficiency , and a commercial case operating temperature range from 0 to 70°C, making it ideal for standard networking.

H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD Optical Module

The H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD optical module combines an 8:4 Mux and a PAM4 Retimer to effectively aggregate data. This ensures exceptional optical signal integrity and low latency across modern cloud infrastructures.

QDD-DR4-400G: 400G Connectivity for Hyperscale Data Centers

Engineered to fulfill demanding high-bandwidth requirements , the QDD-DR4-400G delivers robust 400G connectivity. It serves as a reliable solution for hyperscale data center interconnects, enterprise networking, and intensive Infiniband computing environments.

QDD-DR4-400G Module with 1310nm Wavelength

Operating across a reliable lane wavelength 1310nm , this module utilizes 1.3µm EML transmitters. It guarantees consistent dispersion performance and optimal channel alignment for critical optical links.

QDD-DR4-400G Module Supporting 500m Transmission

The QDD-DR4-400G module supports high-speed data transmission up to 500 meters over single-mode fiber with FEC. It provides an efficient and cost-effective reach for internal intra-datacenter connections.

QDD-DR4-400G Module with MPO-12/APC Interface

Equipped with a standard industry-grade MPO-12 optical connector interface, the QDD-DR4-400G module simplifies high-density fiber cabling. It ensures reliable, low-insertion-loss mating with parallel single-mode fiber infrastructure patches.

QDD-DR4-400G Module with DOM for Real-Time Monitoring

Featuring advanced digital diagnostic monitoring, the QDD-DR4-400G enables real-time tracking of critical operational parameters. Network operators can instantly check absolute transceiver temperature, supply voltage, laser bias current, and received optical power.

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD Certification

The H3C QDD-DR4-400G Compatible LINK-PP transceiver complies with stringent global quality standards. It strictly meets the RoHS environmental directive and conforms fully with international electro-optical specifications.

QDD-DR4-400G Quality Testing Program

Every single module undergoes a rigorous, comprehensive multi-stage quality testing program. Hardware functionality and data integrity are thoroughly checked to guarantee defect-free product manufacturing before shipment.

QDD-DR4-400G Quality Certifications

Built under world-class production management protocols, the module achieves complete certification compliance. It satisfies all major regulatory benchmarks including IEEE 802.3bs and standard MSA system agreements.

QDD-DR4-400G Certified for Reliable Host-Device Compatibility

The 76-pin edge connector and CMIS4.0 software architecture are fully certified. This assures stable interface compatibility and seamless integration across diverse enterprise host hardware systems.

Rigorous Testing Ensures Reliable QSFP-DD Performance

Every QDD-DR4-400G transceiver is subjected to comprehensive technical evaluations. This process guarantees excellent optical performance and rock-solid reliability in harsh network environments.

Rigorous Testing Ensures Reliable Transceiver Performance

Optical Spectrum Test

The optical spectrum test verifies that the 1.3µm EML laser stays precisely within 1290-1320nm.

Eye Pattern Test

The eye pattern test evaluates TDECQ and PAM4 vertical eye closure to ensure crisp signals.

Bit Error Rate Test

The module undergoes bit error rate testing to achieve perfect Post-FEC performance benchmarks.

Temperature Test

Thermal chambers validate consistent operational integrity across the entire 0 to 70°C range.

Product Shipping for H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD

We provide secure, efficient, and standardized shipping processes for every 400G transceiver order. Your high-speed network components are handled with professional logistical care.

Anti-Static Protective Packaging

Each module is sealed inside a customized anti-static protective ESD bag.

Shock-Resistant Transport Protection

Multi-layered, shock-resistant foam cushioning prevents mechanical damage during global transit.

Fast Order Processing and Dispatch

Our dedicated warehouse facility guarantees quick verification, secure processing, and rapid dispatch.

Global Logistics and International Delivery

We utilize trusted international express couriers to deliver shipments reliably worldwide.

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD Usage Demonstration

This demonstration outlines the straightforward installation of the QDD-DR4-400G transceiver. Align the module using its distinctive blue pull tab, insert it smoothly into a live 400G QSFP-DD host slot until it clicks securely, and connect your MPO-12 patch cable.

H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD Usage Demonstration

QDD-DR4-400G 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-DR4-400G 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.

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD After-Sales Assurance

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

Model Comparison Table

	Current Model QDD-DR4-400G	QDD-PLR4-400G	QDD-DR4-400G-Si

Compatible	H3C	H3C	H3C
Data Rate (Max)	425Gbps	425Gbps (4x 106.25Gbps)	425Gbps
Wavelength	1310nm	1310nm	1310nm
Connector	MPO-12/APC	MPO-12/APC	MPO-12/APC
Cable Distance (Max)	500m	10km	500m
Cable Type	SMF	SMF	SMF
Operating Temperature	0°C to +70°C	0°C to +70°C	0°C to +70°C
Vendor Name	LINK-PP	LINK-PP	LINK-PP
Form Factor	QSFP-DD	QSFP-DD	QSFP-DD
Modulation Format	PAM4
Receiver Type	PIN	PIN	PIN
Modulation (Electrical)	8x50G-PAM4		8x50G-PAM4
Modulation (Optical)	4x100G-PAM4		4x100G-PAM4
DDM/DOM	Supported	Supported	Supported
Protocols	QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs	QSFP-DD MSA HW Rev 5.1, QSFP-DD, CMIS Rev 5.0, IEEE 802.3cu, IEEE 802.3bs	QSFP-DD MSA, IEEE 802.3bs, CMIS 4.1
Warranty	5 Years	5 Years	5 Years

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Questions & Answers
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Q: Our enterprise requires strict adherence to networking standards. Is this module fully compliant with IEEE 802.3bs and the QSFP-DD MSA for high-density fiber cabling? By S***n on 2026-04-03

A: You’re fully covered. It complies seamlessly with IEEE 802.3bs, QSFP-DD MSA, and CMIS 4.0 specifications. The module ensures robust EMI resistance and exceptional optical signal integrity across all standard 400G cloud infrastructures. By admin on 2026-04-03
Q: We are planning a massive 400G hyperscale datacenter deployment and need around 500 units. Do you offer bulk volume discounts or any B2B tiered pricing for this QSFP-DD? By S***g on 2025-10-25

A: We definitely do! For high-volume batch orders, our wholesale pricing significantly lowers your per-unit cost. Just hit up our sales team via live chat or email, and we’ll prepare a custom quote to help maximize your IT procurement budget. By admin on 2025-10-25
Q: Hello sir, we run a mixed environment with Cisco Nexus and Arista switches. Will this LQD-M31400-DR4C module work flawlessly across both without throwing "unsupported transceiver" errors? By R***z on 2025-03-01

A: Yes, absolutely! This module is fully OEM compatible and can be flashed to support both Cisco and Arista simultaneously. It's truly plug-and-play, so you won't need to bypass any third-party transceiver warnings via CLI on your network switches. By admin on 2025-03-01

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S***r

Italy

Verified Purchase

4 .0

2026-04-24

Solid 1310nm performance and DOM works well. Delivery took an extra day though.

126 Helpful vote Comments

S***r

Switzerland

Verified Purchase

5 .0

2026-02-19

Best 400G QSFP-DD DR4 transceiver ever!

89 Helpful vote Comments

M***g

Spain

Verified Purchase

5 .0

2026-02-18

The 500m reach is perfect for our inter-building SMF links. Fantastic 400G base performance!

196 Helpful vote Comments

M***s

Chile

Verified Purchase

5 .0

2025-11-22

Required high-density 400G connectivity for an enterprise machine learning cluster. These QSFP-DD modules delivered exceptional PAM4 signal integrity. The 0°C to 70°C commercial temperature rating perfectly suited our heavily air-conditioned indoor facility. ❄️

196 Helpful vote Comments

R***l

Ukraine

Verified Purchase

5 .0

2025-09-18

Highly recommend for multi-brand switch environments. Worked flawlessly across our Dell and EdgeCore gear!

114 Helpful vote Comments

S***n

Norway

Verified Purchase

5 .0

2025-08-01

We deployed a batch of these LINK-PP LQD-M31400-DR4C modules across our Arista spine-and-leaf architecture. The 1310nm EML transmitters are rock solid, and DOM integration makes remote troubleshooting a breeze for our NOC team.

174 Helpful vote Comments

J***l

Indonesia

Verified Purchase

5 .0

2025-07-12

Flawless SMF transmission up to 500m. ⚡

167 Helpful vote Comments

D***n

Ireland

Verified Purchase

5 .0

2025-06-17

Perfect for 400G hyperscale datacenter deployment!

179 Helpful vote Comments

A***n

Japan

Verified Purchase

5 .0

2025-06-05

Great value for Arista spine switches.

116 Helpful vote Comments

S***r

Netherlands

Verified Purchase

5 .0

2025-05-04

Exactly what our enterprise network needed.

37 Helpful vote Comments

D***r

Ireland

Verified Purchase

5 .0

2025-01-10

Runs cool at 70°C in outdoor cabinets.

86 Helpful vote Comments

M***g

Czech Republic

Verified Purchase

5 .0

2025-01-02

Bought these for our campus fiber network. MPO-12/APC interfaces fit perfectly without any hassle.

165 Helpful vote Comments

R***g

Mexico

Verified Purchase

5 .0

2024-12-13

Great 400G connectivity for base station backhaul. The 0-70°C temp range handles our racks fine.

124 Helpful vote Comments

P***t

Japan

Verified Purchase

5 .0

2024-11-24

Excellent alternative to expensive OEM optics! We ran interoperability tests on Cisco and Juniper hardware simultaneously. The MPO-12/APC connectors seated perfectly, achieving flawless 500m 400Gbase-DR4 transmission with zero FEC errors recorded.

45 Helpful vote Comments

T***t

Czech Republic

Verified Purchase

5 .0

2024-11-09

Excellent DDM support! I can easily monitor voltage and temp right from the CLI.

116 Helpful vote Comments

J***n

Ecuador

Verified Purchase

5 .0

2024-10-20

Plug and play with Juniper routers.

118 Helpful vote Comments

M***z

Ukraine

Verified Purchase

5 .0

2024-10-10

Tested these 400G QSFP-DD transceivers extensively for a massive data center interconnect project. They maintain strict IEEE 802.3bs compliance, keeping a steady 9.5W power draw even under heavy loads. Highly reliable for SMF! ⚡

167 Helpful vote Comments

Verified Purchase

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FS

QDD-ER4L-400G | 30km

FS QDD-ER4L-400G Compatible LINK-PP 400G ER4 QSFP-DD 8 x 50G PAM4 1310nm 30km Duplex LC SMF Transceiver Module

175 Sold

$ 4,399 ~~$ 0.00~~

{"pid":496269,"minimum_ordered_quantity":1,"skulist":[{"pskuid":219454,"cid":752,"pid":496269,"sku":"219454","psvid1":318546,"psvid2":318547,"psvid3":0,"psvid4":0,"left_num":173,"price":"4399.000","strike_price":"0.000","innercode":"","addtime":"2026-07-28 23:44:53","uptime":"2026-07-28 23:44:53","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"4,399","subtotal":4399}]}
Arista

QDD-ER4L-400G | 30km

Arista QDD-ER4L-400G Compatible LINK-PP 400G ER4 QSFP-DD 8 x 50G PAM4 1310nm 30km Duplex LC SMF Transceiver Module

198 Sold

$ 4,399 ~~$ 0.00~~

{"pid":496268,"minimum_ordered_quantity":1,"skulist":[{"pskuid":219452,"cid":752,"pid":496268,"sku":"219452","psvid1":318542,"psvid2":318543,"psvid3":0,"psvid4":0,"left_num":94,"price":"4399.000","strike_price":"0.000","innercode":"","addtime":"2026-07-28 23:44:50","uptime":"2026-07-28 23:44:50","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"4,399","subtotal":4399}]}
Juniper

QDD-ER4L-400G | 30km

Juniper QDD-ER4L-400G Compatible LINK-PP 400G ER4 QSFP-DD 8 x 50G PAM4 1310nm 30km Duplex LC SMF Transceiver Module

206 Sold

$ 4,399 ~~$ 0.00~~

{"pid":496267,"minimum_ordered_quantity":1,"skulist":[{"pskuid":219455,"cid":752,"pid":496267,"sku":"219455","psvid1":318548,"psvid2":318549,"psvid3":0,"psvid4":0,"left_num":102,"price":"4399.000","strike_price":"0.000","innercode":"","addtime":"2026-07-28 23:44:54","uptime":"2026-07-28 23:44:54","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"4,399","subtotal":4399}]}
Dell

QDD-ER4L-400G | 30km

Dell QDD-ER4L-400G Compatible LINK-PP 400G ER4 QSFP-DD 8 x 50G PAM4 1310nm 30km Duplex LC SMF Transceiver Module

233 Sold

$ 4,399 ~~$ 0.00~~

{"pid":496266,"minimum_ordered_quantity":1,"skulist":[{"pskuid":219451,"cid":752,"pid":496266,"sku":"219451","psvid1":318540,"psvid2":318541,"psvid3":0,"psvid4":0,"left_num":119,"price":"4399.000","strike_price":"0.000","innercode":"","addtime":"2026-07-28 23:44:49","uptime":"2026-07-28 23:44:49","status":0}],"shippingLists":[{"id":"FedEx","name":"FedEx","logo":"res\/shipping\/FEDEX.jpg","price":"0","isfree":0,"total":"0","tax":"","datemin":"3","datemax":"10","unit_price":"4,399","subtotal":4399}]}

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H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD 8 x 50G PAM4 1310nm 500m MPO-12/APC DOM SMF Optical Transceiver Module

Product summary

Product Details

H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD Specifications

Key Features of H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD

H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD Optical Module

QDD-DR4-400G: 400G Connectivity for Hyperscale Data Centers

QDD-DR4-400G Module with 1310nm Wavelength

QDD-DR4-400G Module Supporting 500m Transmission

QDD-DR4-400G Module with MPO-12/APC Interface

QDD-DR4-400G Module with DOM for Real-Time Monitoring

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD Certification

QDD-DR4-400G Quality Testing Program

QDD-DR4-400G Quality Certifications

QDD-DR4-400G Certified for Reliable Host-Device Compatibility

Rigorous Testing Ensures Reliable QSFP-DD Performance

Optical Spectrum Test

Eye Pattern Test

Bit Error Rate Test

Temperature Test

Product Shipping for H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD

Anti-Static Protective Packaging

Shock-Resistant Transport Protection

Fast Order Processing and Dispatch

Global Logistics and International Delivery

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD Usage Demonstration

QDD-DR4-400G Technical Support

Pre-Sales Technical Consultation

Compatibility Verification Support

Deployment & Installation Assistance

Long-Term Technical Assurance

H3C QDD-DR4-400G Compatible LINK-PP 425G QSFP-DD After-Sales Assurance

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H3C QDD-DR4-400G Compatible LINK-PP 400G QSFP-DD 8 x 50G PAM4 1310nm 500m MPO-12/APC DOM SMF Optical Transceiver Module

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