400G DR4 QSFP-DD Optical Transceiver Module — 500m Reach, Low Power, CMIS 4.0

1.QSFP-DD 400G DR4 Product Overview

The CC-QSFD04DR4-12D is a high-performance optical transceiver module designed for 400G Ethernet applications. It supports both 400G DR4 aggregation and 4x100G breakout modes over single-mode fiber up to 500 meters. Compliant with QSFP-DD MSA and IEEE standards, this optical module offers low power consumption, advanced management interface, and reliable performance for data center and enterprise networks.

2. QSFP-DD 400G DR4 Key Features

• Supports 400GBASE-DR4 and 100GBASE-DR breakout mode
• MPO-12 connector with 8° angled end-face
• Power consumption < 8W (target)
• Operating case temperature: 0°C to 70°C
• CMIS 4.0 management interface
• Hot-pluggable QSFP-DD form factor

3. QSFP-DD 400G DR4 Technology & Standards

The module complies with IEEE 802.3-2022, QSFP-DD MSA, and CMIS 4.0. It uses PAM4 modulation and integrates cooled EA-DFB lasers and PIN photodiodes for superior signal integrity. This optical transceiver module supports both 400GAUI-8 and 100GAUI-2 electrical interfaces.

4. Working Principle

The transceiver converts eight 26.5625 GBd PAM4 electrical lanes into four 53.125 GBd optical channels using an internal DSP gearbox. In breakout mode, it supports four independent 100G channels. The optical module ensures low BER with integrated FEC support.

5. QSFP-DD 400G DR4 Applications

• Data center interconnects
• Switch and router interconnections
• High-performance computing networks
• Cloud infrastructure

6. QSFP-DD 400G DR4 Specifications

7. Advantages

• Low power design reduces operational cost
• Backward compatible with QSFP28 and QSFP+ ports
• High reliability with cooled EA-DFB lasers
• Robust management via CMIS 4.0

8. Service & Support

We offer a 3-year warranty, global shipping, and 24/7 technical support. Custom configuration and bulk order discounts are available.

9. FAQ

Q: Is this module compatible with QSFP28 ports?
A: Yes, the QSFP-DD form factor is mechanically and electrically compatible with QSFP28 and QSFP+.

Q: What is the maximum data rate per channel?
A: Each channel supports 106.25 Gb/s in optical mode and 53.125 Gb/s electrically.

Q: Does it support FEC?
A: Yes, it requires host-side FEC based on RS(544,514) for error correction.

10. Precautions

• Avoid bending fiber beyond minimum bend radius
• Ensure proper ESD handling during installation
• Operate within specified temperature and voltage ranges
• Use compatible host equipment and firmware

11. Company Introduction

With over a decade of industry experience, we operate a large manufacturing facility supported by a strong technical team. We partner with leading brands including Mellanox, Ruckus, Aruba, and Extreme. Our product portfolio includes network switches, adapters, wireless access points, controllers, and cables. We maintain a $10 million inventory to ensure rapid delivery and offer competitive pricing alongside 24/7 customer and technical support. Our professional sales and engineering teams have established a trusted reputation in the global market.

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Track Record: 100+ Projects Completed | 500+ Satisfied Clients | 95% Retention Rate | Zero Critical Failures

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