MMS4X00-NS 800Gbps Twin-port OSFP DR8 Single Mode Optical Transceiver

1. Product Overview

The NVIDIA® MMS4X00-NS represents a breakthrough in data center connectivity as the industry's first 800Gb/s twin-port OSFP optical transceiver. This innovative DR8 (8-channel Datacenter Reach) module integrates two independent 400Gb/s transceiver engines within a single OSFP form factor, delivering unprecedented port density for Quantum-2 InfiniBand and Spectrum-4 Ethernet switches. Utilizing single-mode fiber technology with 100G-PAM4 modulation per channel, this transceiver achieves reliable transmission up to 100 meters while maintaining exceptional power efficiency. The finned-top design ensures optimal thermal management in air-cooled switch environments, providing a superior alternative to traditional passive fiber cable solutions.

2. Key Characteristics

• 800Gb/s aggregate bandwidth (2x 400Gb/s ports)
• Twin-port design with two independent MPO-12/APC connectors
• Up to 100m reach on single-mode fiber (SMF)
• Finned-top OSFP form factor for enhanced air cooling
• 1310nm EML laser technology with 100G-PAM4 per lane
• Dual-protocol support: InfiniBand NDR and 400GbE Ethernet
• Maximum power consumption: 17W (full operation)
• Low-power sleep mode: 1.5W
• Comprehensive Digital Diagnostic Monitoring (DDM) per channel
• Hot-pluggable and RoHS compliant
• Class 1 laser product certified

3. Core Technology & Standards

This advanced Optical Fiber Cable transceiver employs cutting-edge 1310nm External Modulation Laser (EML) technology with PAM4 modulation to achieve exceptional 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 demanding data center environments. The dual MPO-12/APC connectors with angled polish minimize back reflections, offering significant advantages over conventional passive fiber cable implementations.

4. Working Principle

The transceiver incorporates two complete 400Gb/s transceiver engines that operate independently within a single housing. Each engine converts four electrical lanes of 53.125 GBd PAM4 signals into optical signals using integrated EML lasers. These optical signals are transmitted through eight dedicated fibers (four per port) within the MPO-12 connectors over single-mode Optical Fiber Cable. Advanced DSP technology provides signal retiming, adaptive input equalization, and output emphasis to maintain signal integrity. The module automatically detects connected fiber configurations, supporting straight 400Gb/s connections or splitter configurations that enable 200Gb/s operation with reduced power consumption.

5. Application Scenarios

• High-density switch-to-switch interconnects in Quantum-2/InfiniBand NDR systems
• Spectrum-4 Ethernet switch fabric connections
• AI/ML and HPC cluster backbone networking
• Hyper-scale data center spine-leaf architectures
• DGX H100 system connectivity to switching infrastructure
• ConnectX-7 adapter and BlueField-3 DPU connectivity

6. Technical Specifications

7. Advantages & Selling Points

• Unprecedented Density: Delivers two 400Gb/s ports in a single OSFP form factor, effectively doubling port capacity compared to traditional transceivers.
• Protocol Agnostic: Automatically adapts to both InfiniBand NDR and 400GbE Ethernet protocols based on host switch configuration.
• Flexible Deployment: Supports multiple connectivity scenarios including switch-to-switch, switch-to-adapter, and mixed configurations with automatic speed adaptation.
• Advanced Thermal Management: Finned-top design ensures optimal cooling in high-density switch environments, maintaining reliability under full load.
• Comprehensive Monitoring: Extensive DDM capabilities provide per-lane monitoring of temperature, voltage, TX/RX power, and bias current for proactive maintenance.

8. Service & Support

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

9. Frequently Asked Questions

Q: What is the difference between the finned-top and flat-top versions?
A: The finned-top version (MMS4X00-NS) is designed for air-cooled switches with enhanced cooling capabilities. The flat-top version (MMS4X00-NS-FLT) is intended for liquid-cooled systems and DGX H100 deployments where different thermal management is required.

Q: Can I use different cable types on the two ports simultaneously?
A: No, both ports must use the same cable type - either both straight 400Gb/s cables or both 1:2 splitter cables for 200Gb/s operation. Mixing cable types is not supported.

Q: How does this compare to using two separate 400Gb/s transceivers?
A: The twin-port design provides the same functionality as two discrete transceivers but with significantly higher port density, reduced power consumption (17W vs ~18W for two separate units), and simplified cable management through integrated form factor design.

10. Precautions

• Always use NVIDIA-recommended MPO-12/APC crossover cables (MFP7E30 series for straight, MFP7E40 for splitter) for optimal performance.
• Ensure proper cleaning of MPO connectors before installation to prevent contamination that causes most link issues.
• Do not mix APC (green) connectors with UPC (blue) connectors as they are not compatible.
• Maintain operating temperature between 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.