Optech NVIDIA/Mellanox MMS4A50-XM Compatible 1.6T 2×FR4 OSFP Transceiver

IHS / Closed Finned Top | PAM4 | 1310nm | 2km SMF | Dual Duplex LC/UPC | InfiniBand XDR | For NVIDIA Quantum-X800 Air-Cooled & Liquid-Cooled Switches

As AI clusters scale toward multi-terabit fabrics, optics must deliver more than raw bandwidth—they must fit strict thermal envelopes, interoperate cleanly with the switch OS and silicon, and provide reliable diagnostics for operations at scale. The Optech 1.6T 2×FR4 OSFP is engineered to be NVIDIA/Mellanox MMS4A50-XM (980-9IAS0-00XM00) compatible, purpose-built for NVIDIA Quantum-X800 platforms in both air-cooled and liquid-cooled deployments.

With up to 1600Gbps aggregate throughput, 2km reach over SMF, and a closed finned-top / IHS mechanical design, this transceiver supports dense InfiniBand XDR switching while maintaining the observability and standards compliance required for production HPC and machine learning networks.

Key Advantages for Quantum-X800 1.6T Deployments

Built-in Broadcom 3nm DSP + DSP-Based CDR

This module integrates a Broadcom 3nm DSP and provides TX & RX built-in DSP (CDR) to help maintain robust PAM4 signal integrity in high-speed 1.6T environments—especially valuable in dense chassis where thermal and electrical conditions can vary.

Power Efficiency for Dense Systems: <26W Max

Power headroom is a first-order constraint at 1.6T. The module is designed for <26W maximum power consumption, supporting stable operation in high-port-count Quantum-X800 configurations.

Verified Compatibility You Can Deploy

Optech provides 100% original verification and is positioned as perfectly compatible with NVIDIA Quantum-X800 air-cooled and liquid-cooled switches, minimizing integration risk and accelerating qualification cycles.

1.6T Lane Architecture Optimized for HPC/ML Fabrics

The module aligns with modern 200G-lane PAM4 host architectures:

  • Electrical (host side): 8×200G-PAM4

  • Optical (line side): Dual 4×200G-PAM4 optical parallel

This mapping is ideal for HPC and ML architectures where predictable throughput, deterministic performance, and scalable cabling are essential.

FR4 LAN-WDM Optics for 2km SMF Reach

For data-center and campus-scale interconnects, the module uses FR4 LAN-WDM wavelengths:

  • Wavelengths: 1271nm, 1291nm, 1311nm, 1331nm

  • Media: SMF

  • Max cable distance: 2km

  • Connector: Dual Duplex LC/UPC

From the spec table, key optical power parameters include:

  • TX power: -2.2 to -4.9 dBm

  • Minimum receiver power: -6.2 dBm

  • Receiver overload: 4.9 dBm

  • Power budget: 4 dB

  • Extinction ratio: 3.5 dB

Operations-Ready Monitoring and Standards Compliance

Large AI fabrics demand standardized management and clear telemetry. This module supports:

  • DDM/DOM: Supported (for real-time diagnostics and alarms)

  • Inbuilt FEC: Yes

  • Commercial temperature range: 0 to 70°C

  • Hot pluggable compliance: OSFP MSA

  • Networking standard: IEEE 802.3dj

  • Management: CMIS 5.1

  • Electrical I/O alignment: OIF 224G-VSR (host electrical interoperability)

It is also specified to meet RoHS and Class 1 laser safety requirements.

Typical Use Cases

  • NVIDIA Quantum-X800 InfiniBand XDR fabrics for AI training clusters

  • HPC leaf-spine switching where 1.6T port density and <26W optics matter

  • Machine learning infrastructure requiring operational visibility via DDM/DOM

  • High-density SMF deployments preferring LC/UPC field-friendly connectivity

Quick Specs (from the provided product table)

  • Compatible P/N: NVIDIA/Mellanox InfiniBand MMS4A50-XM (980-9IAS0-00XM00)

  • Form factor: Twin-port OSFP Closed Finned Top (IHS)

  • Max data rate: 1600Gbps

  • Wavelength: 1271/1291/1311/1331 nm

  • Distance: 2km

  • Media: SMF

  • Connector: Dual Duplex LC/UPC

  • Transmitter / Receiver: EML / PIN

  • Max power: <26W

  • DDM/DOM: Supported

  • Electrical: 8×200G-PAM4

  • Optical: Dual 4×200G-PAM4

  • CDR: TX & RX built-in DSP

  • Inbuilt FEC: Yes

  • Protocols/Standards: OSFP MSA, CMIS 5.1, IEEE 802.3dj, OIF 224G-VSR

FAQ (SEO-friendly)

Q1: Is this module verified for NVIDIA Quantum-X800 switches?
Yes. It is positioned as 100% verified by the original and designed for Quantum-X800 air-cooled and liquid-cooled platforms.

Q2: What’s the reach and fiber type?
Up to 2km over single-mode fiber (SMF) using dual duplex LC/UPC connectors.

Q3: What lane mapping does it use at 1.6T?
8×200G-PAM4 electrical to dual 4×200G-PAM4 optical parallel.

Q4: Does it support diagnostics and monitoring?
Yes—DDM/DOM is supported, with CMIS 5.1 management alignment.