Mellanox / NVIDIA MFA7A50-C003 400G QSFP-DD DAC Passive Cable 3m

The Mellanox MFA7A50-C003 is a 400G QSFP-DD passive direct-attach cable engineered for ultra-short-reach, high-bandwidth interconnect in data center and HPC environments. This 3-meter DAC leverages passive copper construction to deliver native 400G throughput without active signal conditioning, making it ideal for cost-effective leaf-spine fabric designs and direct NIC-to-switch connections within equipment racks.

Designed for deployment with ConnectX-7 adapters and compatible 400G QSFP-DD equipped switches, this cable supports the full 400Gbps aggregate bandwidth across all four lanes. The passive architecture eliminates power consumption and thermal overhead while maintaining signal integrity across the 3-meter span—a standard intra-rack cabling distance in dense GPU cluster topologies.

Ideal for

• GPU cluster leaf-spine fabric interconnect in AI training environments
• ConnectX-7 NIC to top-of-rack switch patching
• High-performance computing (HPC) node-to-switch cabling
• Data center fabric consolidation reducing active cable complexity
• Machine learning model training infrastructure with high-bandwidth requirements
• Distributed inference cluster networking

Technical specifications

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