MMS4X00-NS400 400Gb/s OSFP DR4 Single Mode Optical Transceiver

1. Product Overview

The NVIDIA® MMS4X00-NS400 is a high-performance, single-port OSFP optical transceiver designed for next-generation 400Gb/s data center infrastructure. This DR4 (4-channel Datacenter Reach) module utilizes single-mode fiber technology with 100G-PAM4 modulation per lane, delivering reliable transmission up to 100 meters. Featuring a flat-top design for optimal thermal management in ConnectX-7 adapter cages, this transceiver automatically adapts to both InfiniBand NDR and 400GbE Ethernet protocols, providing exceptional flexibility for high-speed networking environments. Unlike a standard passive fiber cable, this active transceiver incorporates sophisticated signal processing and diagnostic capabilities.

2. Key Characteristics

• 400Gb/s data rate (4x 100G-PAM4 channels)
• Up to 100m reach on single-mode fiber (SMF)
• OSFP form factor with flat-top design
• Single MPO-12/APC optical connector
• 1310nm EML laser technology
• Dual-speed operation: 400Gb/s (4 channels) or 200Gb/s (2 channels)
• Maximum power consumption: 9W (400G), 5.5W (200G)
• Comprehensive Digital Diagnostic Monitoring (DDM)
• Hot-pluggable and RoHS compliant
• Class 1 laser product certified

3. Core Technology & Standards

This advanced Optical Fiber Cable transceiver employs 1310nm External Modulation Laser (EML) technology and PAM4 modulation to achieve high data density. It complies with IEEE 802.3bs 400GBASE-DR4, InfiniBand NDR specifications, and OSFP MSA Rev. 1.12. The module features CMS 4.0 compliant management interface and supports adaptive equalization, ensuring signal integrity across varying link conditions. The MPO-12/APC connector with angled polish minimizes back reflections, distinguishing it from conventional UPC connectors used with older passive fiber cable solutions.

4. Working Principle

The transceiver converts four electrical lanes of 53.125 GBd PAM4 signals from the host into optical signals using integrated EML lasers. These optical signals are transmitted through four dedicated fibers within the MPO-12 connector over single-mode Optical Fiber Cable. At the receiver end, photodiodes convert the incoming optical signals back to electrical domain. Integrated DSP technology provides signal retiming, adaptive input equalization, and output emphasis to compensate for channel impairments. The module automatically detects connected fiber configuration, operating at full 400Gb/s with 4-channel connectivity or reducing to 200Gb/s mode when only 2 channels are connected via splitter cables.

5. Application Scenarios

• ConnectX-7 400Gb/s NIC to Quantum-2/InfiniBand NDR switch connections
• High-performance computing (HPC) and AI/ML cluster interconnects
• 400GbE spine-leaf data center network architecture
• Hyper-scale data center and cloud infrastructure
• Storage area networks requiring high-bandwidth connections

6. Technical Specifications

7. Advantages & Selling Points

• Protocol Flexibility: Automatically detects and adapts to both InfiniBand NDR and 400GbE Ethernet protocols without requiring configuration.
• Dual-Speed Intelligence: Automatically reduces to 200Gb/s operation when using 1:2 splitter cables, cutting power consumption by nearly 40%.

• Comprehensive DDM provides real-time monitoring of temperature, voltage, TX/RX power, and bias current per lane for proactive maintenance.
• Enhanced Reliability: Rigorous NVIDIA testing and quality control ensure superior performance and longevity compared to alternative optical solutions.

8. Service & Support

This transceiver is backed by NVIDIA's quality assurance and technical support. We complement this with our extensive $10 million inventory for rapid delivery worldwide. Our technical team provides 24/7 consultation for integration support and troubleshooting, ensuring optimal performance in your network environment. We are an authorized distributor for genuine NVIDIA networking components, including this high-performance Optical Fiber Cable transceiver solution.

9. Frequently Asked Questions

Q: What is the difference between DR4 and FR4 optical transceivers?
A: DR4 transceivers use parallel single-mode fiber with MPO connectors for reaches up to 500m, while FR4 uses CWDM technology over duplex fiber for reaches up to 2km. DR4 is typically more cost-effective for intra-data center applications.

Q: Can this transceiver be used with both single-mode and multi-mode fiber?
A: No, the MMS4X00-NS400 is specifically designed for single-mode fiber applications. Using it with multi-mode fiber will result in significant signal loss and unreliable operation. Always use approved single-mode Optical Fiber Cable.

Q: How does the dual-speed feature work?
A: When connected with a 1:2 splitter cable (such as MFP7E40 series), the transceiver automatically detects that only 2 channels are connected and reduces operation to 200Gb/s mode, simultaneously lowering power consumption from 9W to 5.5W.

10. Precautions

• Always use NVIDIA-recommended MPO-12/APC crossover cables (MFP7E30 series) for optimal performance.
• Ensure proper cleaning of MPO connectors before installation to prevent contamination that causes 80% of link issues.
• Do not mix APC (green) connectors with UPC (blue) connectors as they are not compatible.
• Operate within the specified case temperature range of 0°C to 70°C for reliable performance.
• This Class 1 laser product is safe under normal operating conditions but should not be disassembled.
• Handle the transceiver and associated passive fiber cable with care to avoid damage to the optical interfaces.

11. Company Introduction

With over a decade of industry experience, we operate large-scale facilities supported by a robust technical team. We have established a significant global clientele by delivering high-quality networking products at competitive prices. As an authorized distributor for leading brands including NVIDIA Mellanox, Ruckus, Aruba, and Extreme, we offer an extensive portfolio encompassing new network switches, adapters, wireless access points, controllers, and essential connectivity solutions like the Optical Fiber Cable. Our $10 million inventory ensures diverse product availability and bulk supply capabilities. We guarantee accurate delivery and provide round-the-clock customer service and technical support, earning a distinguished reputation in the global market.