NVIDIA Mellanox Launches MCA4J80-N005: Accelerating the 400G Era with Cost-Effective Intra-Rack DAC Solutions

As artificial intelligence, machine learning, and high-performance computing workloads push data center bandwidth requirements to new frontiers, the demand for efficient 400Gb/s connectivity has become paramount. NVIDIA Mellanox, a leader in high-performance networking, addresses this need with the introduction of the MCA4J80-N005. This latest Direct Attach Copper (DAC) cable is engineered to provide a reliable, low-latency, and economical pathway for 400G connections within and between adjacent racks.

Strategic Role in Next-Generation Data Centers

The NVIDIA Mellanox MCA4J80-N005 is strategically positioned as an essential component for upgrading network spine layers, AI training clusters, and high-density cloud infrastructure. It eliminates the cost and complexity barriers often associated with transitioning to 400G, offering network architects a plug-and-play solution that maximizes port density and minimizes power consumption for short-reach links, typically under five meters.

Engineered for Performance and Efficiency

As a MCA4J80-N005 400Gb/s QSFP56 passive copper DAC, this solution delivers exceptional value. Its passive design requires no additional power for signal conditioning, resulting in zero added latency, lower thermal output, and superior power efficiency compared to active optical cables (AOCs). The MCA4J80-N005 400G DAC cable is built to rigorous quality standards, ensuring robust signal integrity for the most demanding data flows.

• Uncompromising Compatibility: Designed for seamless integration, the MCA4J80-N005 compatible solution works flawlessly with the full range of NVIDIA Mellanox Quantum-2 InfiniBand switches and Spectrum-4 Ethernet switches, as well as ConnectX-7 adapters, protecting existing infrastructure investments.
• Optimized TCO: The compelling MCA4J80-N005 price point provides a significant cost advantage per 400G port, making large-scale deployment financially viable and offering an outstanding total cost of ownership (TCO).
• Deployment Agility: Available in critical short lengths, it enables clean cable management within ultra-dense racks, improving airflow and simplifying maintenance without sacrificing performance.

For complete engineering details, including electrical characteristics and compliance information, network planners should consult the official MCA4J80-N005 datasheet.

Key Application Environments

The MCA4J80-N005 400G DAC cable solution is ideally deployed in several high-impact scenarios. It is the optimal choice for interconnecting 400G leaf and spine switches within a pod or rack row, forming the high-bandwidth backbone of modern data centers. It is also critical for connecting GPU servers in AI/ML clusters to the network fabric and for linking high-performance storage platforms. This versatility makes it a cornerstone for building scalable, future-ready infrastructure.

Availability and Next Steps

The MCA4J80-N005 for sale now through NVIDIA's global network of authorized distributors and partners. By adopting the MCA4J80-N005, organizations can accelerate their transition to 400G networking with a solution that delivers proven reliability, performance, and economic efficiency. It represents a strategic enabler for businesses looking to capitalize on next-generation applications without operational complexity.

To explore detailed MCA4J80-N005 specifications and understand how this solution can transform your network's core, learn more and connect with an NVIDIA Mellanox networking specialist for a customized assessment.