MCA7J70-N004, NVIDIA Mellanox NVIDIA Active Copper Splitter Cable, IB Twin Port NDR 800Gb/s to 4x200Gb/s, OSFP to 4xOSFP, 4m

The Mellanox MCA7J70-N004 is a high-performance NVIDIA Networking active copper splitter cable designed for modern InfiniBand NDR data center and HPC interconnects. This accessory is built for NVIDIA InfiniBand NDR 800Gb/s direct-attach cabling and helps connect next-generation switches and adapters with OSFP interfaces. With an aggregate throughput of 800Gb/s (4 × 200Gb/s), the MCA7J70-N004 offers reliable, low-latency connectivity for dense GPU clusters, large-scale storage fabrics, and high-throughput computing environments. The cable uses a 1 × OSFP dual-port NDR 800Gb/s connector on one side, splitting out to 4 × OSFP 200Gb/s on the other side, which is ideal for fan-out connections from high-capacity switch ports to multiple downstream devices. As an active copper splitter (DAC), it integrates signal conditioning to maintain signal integrity across the 4 m length, while keeping latency low and power consumption significantly below that of optical modules. The OSFP connectors on all ends ensure consistent mechanical and electrical performance with NVIDIA NDR platforms, simplifying deployment and replacement in large racks. This Mellanox MCA7J70-N004 cable is suited for operators in Asia, Europe, Africa, and North America who need predictable performance and straightforward installation in AI clusters, cloud nodes, and research computing networks. For distributors and system integrators, it supports standardized, high-density cabling schemes and helps optimize port utilization on expensive NDR 800Gb/s switch ports. For end users, the MCA7J70-N004 offers a simple, plug-and-play way to scale bandwidth between 800Gb/s aggregation and 200Gb/s endpoints without complex configuration. By using this dedicated InfiniBand NDR splitter cable, you can keep your infrastructure consistent with NVIDIA Networking best practices and sustain stable, long-term operation in demanding 24/7 data center conditions.