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Rectangular OSFP transceiver with flat top, cooling fins, tan pull tab, green MPO-12/APC connector

NVIDIA

NVIDIA MMA4Z00-NS400 400Gb/s OSFP SR4 50m SFP transceiver

SKU CH-6HYT-ZCBK3 MPN MMA4Z00-NS400

A 400Gb/s OSFP SR4 transceiver supporting 50-metre multimode links with MPO-12/APC connector

  • Compatible BrandMellanox
  • 400 Gbit/s throughput for high-density data networking
  • 50-metre reach over OM4 multimode fibre for short-range links
  • Hot-pluggable OSFP module enables service without downtime
  • MPO-12/APC angled connector ensures low-loss multi-mode alignment
  • Auto-negotiates to 200 Gbit/s when used with 1:2 splitter cables

400Gb/s OSFP SR4 transceiver

The NVIDIA MMA4Z00-NS400 is a single-port OSFP module designed for 400 Gigabit Ethernet and InfiniBand networks. It suits data-centre operators who need short-reach multimode connectivity between switches or servers. The hot-pluggable form factor allows insertion without system downtime. It uses a 4-channel MPO-12/APC connector with an aqua pull tab for multimode identification.

SR4 reach and splitter behaviour

The SR4 standard limits the link to 50 metres over OM4 multimode fibre assuming two patch panels. A 1:2 splitter cable activates only two of the four channels, automatically dropping the speed to 200G and reducing power draw. The green MPO-12/APC shell denotes angled polish and will not mate with ultra-flat UPC connectors. No reach beyond the specified 0.05 km is supported by this module design.

Installation notes and common issues

The flat-top OSFP shell relies on the riding heat sink of the ConnectX-7 cage for cooling, so cage compatibility must be verified before deployment. Firmware detects the attached switch protocol and enables InfiniBand or Ethernet automatically. Mis-mating the APC connector with UPC equivalents is the most frequent cause of link failure. Always confirm the connector colour coding matches the patch panel specification.

Highlights

  • 400 Gbit/s throughput for high-density data networking
  • 50-metre reach over OM4 multimode fibre for short-range links
  • Hot-pluggable OSFP module enables service without downtime
  • MPO-12/APC angled connector ensures low-loss multi-mode alignment
  • Auto-negotiates to 200 Gbit/s when used with 1:2 splitter cables

Specifications

BrandMellanox
Compatible BrandMellanox
Shipping weight0.10 kg
Package size191 × 51 × 25 mm

Questions about this item

Should I choose the SR4 multimode version or a different reach for my 400Gb/s link?

The SR4 multimode design reaches 50 meters on OM4 fiber with two patch panels, so pick it when your runs stay within that distance.

What does the 400Gb/s rating mean once the transceiver is installed in a switch?

It delivers 400 Gigabit Ethernet or InfiniBand throughput using four 100G-PAM4 channels over a single MPO-12/APC connector.

How does the OSFP interface with riding heat sink affect performance in a ConnectX-7 cage?

The flat-top OSFP shell mates with the ConnectX-7 riding heat sink, providing the cooling needed for sustained 400Gb/s operation.

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