MMS4X00-NM 800Gbps Twin-port OSFP 2x400Gb/s InfiniBand and Ethernet Single Mode DR8 500m

MMS4X00-NM 800Gbps Download PDF


The NVIDIA MMS4X00-NM is an InfiniBand and Ethernet 800Gb/s, 2x400Gb/s Twin-port OSFP, DR8 single mode, parallel, 8-channel transceiver using two, 4-channel MPO-12/APC optical connectors at 400Gb/s each. The parallel single mode, datacenter reach 8-channel (DR8) design uses 100G-PAM4 modulation and has a maximum fiber reach of 500-meters using 8 single mode fibers. The 500-meter length assumes two optical patch panels in the link.
The Twin-port DR8 transceiver is a key NVIDIA innovation with two internal transceiver engines enabling 64-ports of 400Gb/s in a 32-OSFP cage Quantum-2 switch. Spectrum-4 switches have 32 or 64 cages and enable 64-128 400G ports. The transceiver firmware supports both InfiniBand and Ethernet and is automatically enabled depending on the protocol of the switch attached to.
The Quantum-2 and Spectrum-4 switches require finned-top OSFP shells for extra transceiver cooling. The main application for MMS4X00-NM is linking two switches together from 100-to-500-meter link length. 500-meter transceivers have purple marking. A flat top version (-NM-FLT) is offered for DGX-H100 systems.
The 500-meter MMS4X00-NM part is similar to the 100-meter MMS4X00-NS, only extensively tested up to 500-meters use cases and may employ a different error correction scheme.
The transceiver combinations guarantee optimal operation in NVIDIA end-to-end InfiniBand systems and a rigorous production tested to ensure the best out-of-the-box installation experience, performance, and durability.

Finned Top Transceiver



Images are for illustration purposes only. Product labels, colors, and lengths may vary.

Key Features

  • 800G DR8 single mode transceiver

  • 8-channels of 100G-PAM4 electrical modulation

  • Two MPO-12/APC optical connectors

  • Two ports of 4-channel 100G-PAM4 optical modulation

  • Supports two straight 400Gb/s fiber cables for 800Gb/s

  • Finned-top OSFP for air-cooled switches

  • 1310nm EML laser

  • 500m Max reach

  • 17-Watts max power

  • 1.5 Watt low-power sleep mode

  • Single 3.3V power supply

  • Class 1 laser safety

  • Hot pluggable, RoHS compliant

  • compliant

  • CMIS 4.0 compliant

  • Case temperature range of 0°C to +70°C


  • Used to link Quantum-2 or Spectrum-4 air-cooled switches together

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