NVIDIA/Mellanox 400G OSFP to 2x200G QSFP112 DAC

The NVIDIA/Mellanox MCP7Y40-N002 is a passive breakout direct-attach copper (DAC) cable designed to split a single 400G OSFP port into two 200G QSFP112 connections. This architecture enables flexible high-speed interconnect scaling within data center spine-to-leaf topologies, particularly suited for AI and HPC environments where 400G uplinks from core switches require distribution across multiple 200G-capable GPU servers or storage nodes.

The cable implements a passive electrical design with no active retimers or signal conditioning, delivering native 400G PAM4 signal splitting through OSFP connector termination. Operating distances extend to 5 meters on copper, maintaining signal integrity for intra-rack and adjacent-rack deployment scenarios. The dual QSFP112 endpoints provide backward compatibility with existing 200G infrastructure while consolidating rack cabling through single-port aggregation.

Target deployments include AI training clusters, large language model inference farms, and high-performance computing environments where bandwidth-intensive GPU interconnects require efficient spine aggregation without introducing additional active electronics or latency.

Ideal for

• AI cluster spine-to-GPU-server links: 400G core aggregation split across dual 200G connections to multiple GPU nodes
• Data center fabric over-subscription reduction: consolidate multiple 200G server uplinks to single 400G spine port via breakout
• HPC interconnect scaling: distribute high-bandwidth 400G core links to clusters of 200G-connected compute nodes
• Storage array tiering: connect 400G array controllers to dual 200G fabric paths for load balancing
• Multi-tenant rack isolation: split shared 400G spine bandwidth across separate tenant 200G ingress links
• Transition infrastructure: leverage existing 200G NIC inventory while deploying 400G core capabilities

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.