Optical OSFP Transceiver Module NVIDIA MMS4X50-NM 800GbE 2x400GBase-FR4

The NVIDIA MMS4X50-NM OSFP optical transceiver module provides 800GbE capacity through two 400GBase-FR4 lanes, enabling long-reach single-mode connections using FR4 wavelength multiplexing. Built for high-density data center and carrier environments, this OSFP form-factor module supports consolidated uplinks, spine-leaf aggregation and backbone links while reducing cabling complexity for enterprise and service-provider networks.

Advantages

This OSFP transceiver offers high aggregate bandwidth with two independent 400GBase-FR4 channels in a single module, supporting long-reach single-mode transmissions suitable for metropolitan and regional links. Its compact OSFP form factor enables high port density in switches and routers, while FR4 wavelength multiplexing reduces the number of fibers required for multi-lane transmission. The module is compatible with standard optical interfaces and designed to integrate into existing high-performance networking equipment.

Suitable for

• High-density data center uplinks and spine-leaf aggregation
• Carrier-class backbone and metro/regional transport links
• Consolidated 800GbE connections where fiber count and rack space are constrained
• High-performance switch and router ports requiring OSFP optical modules

Key specifications

• Aggregate capacity: 800GbE delivered as 2x400G channels
• Interface type: OSFP optical transceiver
• Optical standard: 400GBase-FR4 per lane (FR4 wavelength multiplexing)
• Transmission medium: single-mode fiber (SMF)
• Reach: long-reach suitable for metro and regional links (FR4 single-mode)
• Form factor: OSFP for high port density
• Application: uplinks, spine-leaf aggregation, backbone and carrier transport

How to use

Install the OSFP module into a compatible OSFP port on a switch or router following the host equipment manufacturer’s hot-swap and ESD procedures. Connect single-mode fiber with appropriate FR4-compatible multiplexing or breakout cabling as required by the network design. Verify link status and channel negotiation using the host device management interface and perform optical power and link tests to confirm expected performance before placing traffic into production.

Recommendations

Ensure the host platform supports OSFP and 400GBase-FR4 optics and verify firmware and transceiver compatibility. Use certified single-mode fiber and appropriate FR4 WDM components for long-reach links, and monitor optical power and temperature during initial deployment. Follow standard ESD handling and insertion/removal best practices to protect the module and host port.