Mellanox MMS4X00-NS400 Compatible TAA 400GBase-DR4 PAM4 OSFP112 RHS Transceiver (SMF, 1310nm, 500m, MPO, DOM, CMIS 5.0)

This Mellanox MMS4X00-NS400 compatible OSFP112 RHS transceiver is engineered for high-density data center networks requiring scalable 400 Gigabit performance. Delivering 400GBase-DR4 over single-mode fiber at up to 500 meters, it uses PAM4 signaling at 1310 nm and connects via a robust MPO interface. Built to align with CMIS 5.0 standards and Digital Optical Monitoring (DOM) for real-time health data, this TAA-compliant module offers seamless integration with Mellanox and other leading switches and storage systems while maintaining reliability in demanding environments. Whether you are modernizing a spine-leaf fabric or expanding inter-rack connectivity, this transceiver is designed to deliver consistent performance, tight optical budgets, and straightforward management across your network stack.

• Ultra-high throughput: 400GBase-DR4 with four PAM4 lanes at 1310 nm delivers sustained 400 Gbps of bandwidth across multiple traffic aggregates, ideal for backbone links, data-center interconnects, and high-performance storage networks where every gigabit counts.
• Long-reach SMF connectivity: Operates at 1310 nm with a reach of up to 500 meters over standard single-mode fiber, enabling flexible campus-to-data-center interconnects and simplified fiber routing without compromising signal integrity.
• High-density OSFP112 RHS form factor: Designed for dense deployments, this transceiver fits OSFP ports with a compact footprint and an MPO/MTP-12 connector interface, optimizing port count and cooling in modern switch and router chassis.
• Integrated health and compatibility features: Digital Optical Monitoring (DOM) provides real-time optical power, temperature, and signal quality metrics, while CMIS 5.0 compatibility ensures smooth provisioning, inventory control, and interoperability within heterogeneous environments.
• Reliability and compliance: Built for 0–70°C operation, TAA-compliant, and designed to work seamlessly with Mellanox MMS4X00-NS400 ecosystems, offering dependable performance in data centers, cloud hubs, and edge deployments where uptime and predictability matter.

Technical Details of Mellanox MMS4X00-NS400 Compatible TAA 400GBase-DR4 PAM4 OSFP112 RHS Transceiver (SMF, 1310nm, 500m, MPO, DOM, CMIS 5.0)

• Form factor: OSFP112 RHS transceiver module designed to support 400G DR4 applications in high-density environments.
• Wavelength and modulation: 1310 nm PAM4 signaling enables four parallel 100G lanes to achieve 400G throughput while maintaining efficient power usage and thermal performance.
• Reach: Up to 500 meters over single-mode fiber (SMF), suitable for data-center interconnects and campus-wide links requiring longer distances without additional amplification.
• Connector type: MPO/MTP-12 interface to maximize fiber density and simplify cable management in high-speed networks.
• Monitoring and management: Digital Optical Monitoring (DOM) provides continuous visibility into optical power, transceiver temperature, and performance metrics; CMIS 5.0 compatibility ensures compatibility with standard management tools and systems.
• Operating temperature: 0 to 70°C, engineered for the rigors of data center racks, heat-intensive deployments, and field installations where environmental conditions vary.
• Compliance and compatibility: TAA-compliant with cross-vendor interoperability, specifically designed to align with Mellanox MMS4X00-NS400 family and related 400G DR4 deployments.
• Data integrity and safety features: Optimized for robust link reliability, controlled eye safety margins for PAM4 signaling, and adherence to industry standards for optical safety and performance.

how to install Mellanox MMS4X00-NS400 Compatible 400GBase-DR4 PAM4 OSFP112 RHS Transceiver

Installing this 400G transceiver is straightforward when you follow proper handling, compatibility checks, and fiber management practices. Begin with a plan to minimize downtime and verify that your OSFP-enabled switch or router port supports 400G DR4 PAM4 modules before installation. Handling precautions include static-safe procedures, grounding yourself, and handling the module by its edges to avoid touching the optical connectors or active circuitry. Ensure you have the correct MPO/MTP-12 fiber assembly prepared for the link path and that your fiber optic cables are clean and free from contaminants before mating with the transceiver. The steps below outline a safe and effective installation process designed to maximize performance and minimize post-installation troubleshooting.

• Power down the host device or port where the transceiver will be installed and disconnect any attached fiber cables to prevent accidental injection or damage during seating.
• Confirm compatibility: verify that your OSFP system supports 400G DR4 PAM4 and that the port’s firmware and CMIS stack are up to date to maximize interoperability with the transceiver.
• Open the chassis slot and inspect the compliant orientation for an OSFP112 RHS module; align the connector interfaces with the port and carefully slide the transceiver into the slot until it seats with a secure, tactile click.
• Attach the MPO/MTP-12 fiber harness to the transceiver’s optical interface, ensuring proper fiber polarity and secure connections. Route cables to reduce bending and enclosure stress, and use appropriate strain relief to prevent premature wear.
• Power on the device and verify link status via the switch’s management interface. Use the CMIS or vendor-provided tools to read DOM data and confirm healthy optical measurements such as Tx power, Rx power, temperature, and eye safety margins.
• Run a basic throughput and latency check to validate end-to-end 400G DR4 performance. Monitor the port for the first 24–48 hours to detect any anomalies, including increased BER, signal fluctuations, or unexpected temperature spikes.

Frequently asked questions

What does 400GBase-DR4 PAM4 mean for my network?

400GBase-DR4 refers to a 400 gigabit per second Ethernet optical interface that uses four PAM4 modulation lanes to achieve the 400G data rate over a single fiber link. DR4 indicates a short-reach design suitable for data-center backbones and interconnects, typically deployed over SMF with modest reach requirements (up to several hundred meters). In practice, DR4 PAM4 offers higher spectral efficiency and reduced fiber count compared with non-PAM4 approaches, enabling dense, high-bandwidth fabrics in modern data centers.

What is PAM4 and why is it used in this transceiver?

PAM4 stands for Pulse-Amplitude Modulation with four discrete levels. It allows two bits per symbol, effectively doubling the data capacity of each optical lane compared with traditional NRZ signaling. For 400G DR4, four PAM4 lanes are used to carry 100G each, achieving the aggregate 400G data rate while maintaining reasonable optical power budgets and receiver sensitivity. PAM4 requires precise transmitter and receiver calibration, robust cabling, and digital signal processing in the transceiver and switch to maintain link reliability.

What is Digital Optical Monitoring (DOM) and CMIS 5.0 in this module?

DOM provides real-time health and performance data about the transceiver, including optical power levels, temperature, laser bias, and other critical parameters. CMIS 5.0 (Common Management Interface Specification) standardizes how transceivers are managed across different vendors, enabling consistent provisioning, inventory tracking, and telemetry retrieval. Together, DOM and CMIS 5.0 simplify maintenance, troubleshooting, and lifecycle management in complex networks.

Is this transceiver compatible with Mellanox MMS4X00-NS400 switches and other vendors?

Yes. The module is designed to be compatible with Mellanox MMS4X00-NS400 ecosystems and is crafted to meet industry standards to work with other OSFP-enabled platforms that support 400G DR4 PAM4. Compatibility can vary by firmware version and port economics, so it’s recommended to confirm your specific switch model and firmware supports this CMIS 5.0-enabled transceiver.

What are the environmental and handling considerations?

The transceiver operates within a 0–70°C range and is designed for data-center environments where temperature, humidity, and airflow are controlled. Handle with care to avoid ESD damage, keep the optical connectors clean, and store the module in anti-static packaging when not in use. Proper fiber handling—no excessive bending, secure routing, and clean connectors—helps preserve signal integrity and long-term reliability.

What should I expect in terms of installation and maintenance?

Installation should be straightforward in a supported OSFP port, with DOM data available shortly after link establishment. Regular monitoring via CMIS 5.0 tools will show live transceiver health, and proactive maintenance can be performed by tracking metrics such as Tx/Rx power, temperature, and BER. Periodic fiber inspections and connector cleaning, along with firmware updates on the host device, help maintain peak performance and reduce the likelihood of link outages.