Huawei QSFP-DD-400G-DR4 Optical Transceiver Module

About Huawei QSFP-DD-400G-DR4 400G Optical Transceiver Module in Bangladesh

The Huawei QSFP-DD-400G-DR4 is a high-speed 400Gbps optical transceiver designed for high-density data center and enterprise network environments. It uses the QSFP-DD form factor and 400GBASE-DR4 optical standard to provide high-bandwidth connectivity over single-mode fiber.

The module operates at a nominal wavelength of 1311nm and supports transmission distances of up to 500 meters over G.652 single-mode fiber. It uses an MPO-12 APC optical connector and supports 400Gbps transmission using 4 × 100G-PAM4 optical lanes. Huawei identifies the module with part number 02312NPH. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Huawei QSFP-DD-400G-DR4 Specifications & Features

Overview

The Huawei QSFP-DD-400G-DR4 is designed for 400GE data center networking applications requiring high bandwidth and short-reach single-mode optical connectivity. Its QSFP-DD architecture provides a compact, high-density optical interface suitable for modern 400G switches and networking platforms.

Huawei's 400G optical module portfolio lists the QSFP-DD-400G-DR4 alongside other 400G QSFP-DD modules such as the SR8 and FR4. Huawei specifies the DR4 module for single-mode fiber with a maximum transmission distance of 0.5km. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g))

Buy Huawei QSFP-DD-400G-DR4 400G Transceiver in Bangladesh

Purchase the Huawei QSFP-DD-400G-DR4 400G optical transceiver from Datacom Technologies (BD). We supply Huawei networking equipment, data center optical modules, switches, transceivers and enterprise network infrastructure in Bangladesh with competitive pricing, technical consultation and nationwide delivery.

Key Features

• 400Gbps high-speed optical connectivity
• QSFP-DD form factor
• 400GBASE-DR4 optical standard
• Single-mode fiber (SMF) support
• 1311nm operating wavelength
• Up to 500m transmission distance
• MPO-12 APC connector
• 4 × 100G-PAM4 optical lanes
• 0°C to 70°C operating case temperature
• Digital diagnostic monitoring supported
• 3dB optical power budget
• Designed for compatible Huawei 400GE networking equipment

Applications

• 400GE Data Center Networking
• High-Speed Switch Interconnects
• Data Center Spine and Leaf Networks
• Enterprise Core Networking
• Cloud Data Centers
• AI and High-Performance Computing Networks
• Server-to-Switch Connectivity
• Switch-to-Switch Interconnects
• High-Bandwidth Network Aggregation

400Gbps High-Speed Connectivity

The Huawei QSFP-DD-400G-DR4 provides a total transmission rate of 400Gbps. This high bandwidth is designed for modern data center networks where increasing east-west traffic, AI workloads and high-density server infrastructure require higher-capacity optical links.

Huawei specifies the module as a 400Gbit/s QSFP-DD optical module using the 400GBASE-DR4 standard. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

400GBASE-DR4 Optical Standard

The QSFP-DD-400G-DR4 uses the 400GBASE-DR4 optical standard. DR4 is intended for 400G short-reach single-mode fiber applications and uses four optical lanes.

Huawei specifies 4 × 100G-PAM4 modulation on both the electrical and optical sides for this 400G QSFP-DD DR4 module. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g))

1311nm Wavelength

The module operates at a nominal 1311nm wavelength. This wavelength is used with single-mode fiber for the short-reach 400G DR4 application.

Huawei's official specifications identify 1311nm as the center wavelength of the QSFP-DD-400G-DR4. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

500-Meter Transmission Distance

The QSFP-DD-400G-DR4 supports transmission distances of up to 0.5km / 500 meters over compatible G.652 single-mode fiber.

This makes the module suitable for short-distance data center interconnects and switch-to-switch connections where the optical path remains within the specified 500-meter range. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Single-Mode Fiber Support

The Huawei QSFP-DD-400G-DR4 is designed for single-mode fiber (SMF). Huawei specifies G.652 single-mode optical fiber with a nominal fiber diameter of 9μm for the 0.5km target transmission distance. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Use compatible single-mode MPO fiber assemblies designed for 400G DR4 applications. Fiber polarity, connector type and lane mapping should be checked before deployment.

MPO-12 APC Connector

The module uses an MPO 1×12 connector with APC end face. Huawei's hardware documentation specifically identifies the optical connector as MPO 1×12 and the optical port ceramic ferrule end face as APC. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Because DR4 uses multiple optical lanes, the correct MPO fiber type, polarity and connector configuration are essential for successful link establishment.

QSFP-DD Form Factor

QSFP-DD stands for Quad Small Form-factor Pluggable Double Density. The form factor is designed to provide high-density optical connectivity while supporting multiple high-speed electrical lanes.

Huawei lists the QSFP-DD-400G-DR4 as a QSFP-DD 400GE optical module. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g))

4 × 100G-PAM4 Optical Architecture

The QSFP-DD-400G-DR4 uses four 100G optical lanes based on PAM4 modulation to deliver an aggregate 400Gbps optical connection.

This lane architecture allows the module to provide 400G connectivity while maintaining the compact QSFP-DD form factor required for high-density data center switches.

Digital Diagnostic Monitoring

The Huawei QSFP-DD-400G-DR4 supports digital diagnostic monitoring. DDM can provide operational information that helps network administrators monitor the optical module and diagnose link conditions.

Actual monitoring parameters and the available management interface depend on the host switch and its software support.

Operating Temperature

The specified operating case temperature range is 0°C to 70°C. This makes the module suitable for standard controlled data center and enterprise networking environments.

Huawei's official hardware documentation specifies the 0°C to 70°C operating case temperature range for QSFP-DD-400G-DR4. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Optical Power Budget

Huawei specifies a 3dB power budget for the QSFP-DD-400G-DR4. The actual optical link design must consider fiber attenuation, connector losses, patch-panel losses and other components in the optical path. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g))

Data Center Networking

The QSFP-DD-400G-DR4 is designed for high-bandwidth data center networking. It can be deployed in compatible 400GE switch interfaces to connect high-performance network devices over short single-mode fiber links.

Its 400Gbps capacity is particularly suitable for modern data centers where server density, AI infrastructure and east-west traffic continue to increase.

AI and High-Performance Computing Networks

400G optical connectivity is increasingly used in high-performance computing and AI infrastructure where large numbers of accelerated servers and networking devices require high-bandwidth interconnects.

The DR4's 500-meter single-mode reach is suitable for short optical paths within data center environments, subject to the optical link budget and the specifications of the connected equipment.

Huawei QSFP-DD-400G-DR4 vs 400G FR4

Huawei's current 400G portfolio specifies DR4 for 0.5km SMF transmission with an MPO-12 connector, while FR4 supports up to 2km and uses LC/DLC connectivity. ([Huawei](https://e.huawei.com/cn/products/dcn-modules/400g))

Compatibility Considerations

The QSFP-DD-400G-DR4 should be installed only in equipment that supports the appropriate QSFP-DD 400GE optical interface and module specifications.

• Compatible 400GE QSFP-DD host port
• 400GBASE-DR4 support
• Compatible MPO-12 APC fiber connection
• Single-mode fiber infrastructure
• Correct MPO polarity and lane mapping
• Compatible switch firmware and optical-module support
• Optical link within the specified 500m range

Huawei's CloudEngine documentation specifically lists QSFP-DD-400G-DR4 as a supported 400GE QSFP-DD optical module on compatible CloudEngine platforms. Exact compatibility depends on the switch model and software version. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Benefits

• 400Gbps high-speed networking
• High-density QSFP-DD form factor
• 400GBASE-DR4 standard
• 1311nm optical wavelength
• Up to 500m single-mode fiber transmission
• MPO-12 APC connectivity
• 4 × 100G-PAM4 optical lanes
• Digital diagnostic monitoring
• 0°C to 70°C operating temperature
• Suitable for modern data center networks
• Designed for compatible Huawei 400GE platforms

Why Buy from Datacom Technologies (BD)?

Datacom Technologies (BD) supplies Huawei optical transceivers, data center switches, enterprise networking equipment and high-speed optical connectivity products in Bangladesh. Customers can receive competitive pricing, technical consultation, deployment assistance and nationwide delivery.

• Call/WhatsApp: +8801748173213
• Email: sales@datacom.com.bd
• Alternative Email: datacomtechnologiesbd@gmail.com
• Office: Tropical Center, 218, Dr. Kudroti Khuda Road, New Elephant Road, Dhaka-1205, Bangladesh

Frequently Asked Questions (FAQ)

Q1: What is the Huawei QSFP-DD-400G-DR4?
It is a 400Gbps QSFP-DD optical transceiver designed for 400GBASE-DR4 single-mode fiber networking.

Q2: What is the Huawei part number?
The official Huawei part number is 02312NPH. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Q3: What is the data rate?
The module provides a total data rate of 400Gbps.

Q4: What optical standard does it use?
It uses the 400GBASE-DR4 optical standard.

Q5: What wavelength does the module use?
The specified center wavelength is 1311nm. ([Huawei](https://support.huawei.com/enterprise/zh/doc/EDOC1100369503/fbfb4e2f))

Q6: What is the maximum transmission distance?
The target transmission distance is 0.5km / 500 meters over compatible G.652 single-mode fiber.

Q7: What connector does QSFP-DD-400G-DR4 use?
It uses an MPO-12 / MPO 1×12 APC optical connector.

Q8: Does it use single-mode or multimode fiber?
The QSFP-DD-400G-DR4 is designed for single-mode fiber (SMF).

Q9: What modulation does it use?
Huawei specifies 4 × 100G-PAM4 modulation for the DR4 optical interface.

Q10: Does it support digital diagnostics?
Yes. Digital diagnostic monitoring is supported.

Q11: What is the operating temperature?
The specified operating case temperature is 0°C to 70°C.

Q12: What is the optical power budget?
Huawei specifies a 3dB power budget for the QSFP-DD-400G-DR4.

Q13: Is QSFP-DD-400G-DR4 suitable for AI data centers?
Yes. Its 400Gbps capacity and short-reach SMF connectivity make it suitable for compatible high-bandwidth data center and AI/HPC networking environments.

Q14: Is QSFP-DD-400G-DR4 compatible with every 400G QSFP-DD port?
Not necessarily. Host compatibility, optical standard, firmware, connector type and platform support should be verified before deployment.

Q15: Where can I buy Huawei QSFP-DD-400G-DR4 in Bangladesh?
You can contact Datacom Technologies (BD) for Huawei 400G optical transceivers, data center networking equipment and enterprise optical solutions with competitive pricing and nationwide delivery.