NVIDIA Mellanox MCA4J80-N003 400Gb/s NDR Active Copper Cable, OSFP Finned-to-Finned, 3m: This is a 3-meter Active Copper Cable (ACC) with OSFP RHS (Riding Heat Sink, Finned-Top) connectors on both ends, engineered for NVIDIA Quantum-2 InfiniBand NDR switch fabrics. The cable carries 400Gb/s NDR per port and is intended for switch-to-switch and switch-to-NIC links where both endpoints use Finned-Top OSFP cages. This is a copper-based active cable, not an optical AOC and not a passive DAC. NVIDIA P/N: 980-9I60Z-00N003. This is a new, factory-sealed unit.
Engineering Context
Active Copper Cables embed redriver silicon at each connector to compensate for copper insertion loss at NDR rates, extending reliable reach beyond the typical 1.5m limit of passive DACs at 400Gb/s. The Finned-Top (RHS) mechanical design is required by Quantum-2 switch cages (MQM9700 / MQM9790) for proper airflow and thermal dissipation at NDR power envelopes. The link operates as 4 differential lanes at 100Gb/s PAM4 per port for 400Gb/s aggregate.
Deployment & Use Cases
Spine-leaf 400G NDR connectivity inside Quantum-2 fabric tiers. AI training cluster intra-rack links between RHS-equipped NICs and Quantum-2 leaf switches. HPC supercomputing fabrics where copper reach beyond 1.5m is needed but optics are not justified by distance. NVMe-oF and GPUDirect Storage backends over IB NDR.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number (MPN): MCA4J80-N003
NVIDIA P/N: 980-9I60Z-00N003
Cable Type: Active Copper Cable (ACC)
Connector: OSFP RHS (Finned-Top) on both ends
Data Rate: 400Gb/s NDR per port
Signaling: 4 lanes × 100Gb/s PAM4
Length: 3 meters
Protocol: InfiniBand NDR / 400GbE
Condition: New — Factory-sealed
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum-2 switches (MQM9700, MQM9790) and with NDR-capable OSFP RHS adapters (ConnectX-7, BlueField-3 in Finned-Top configurations). Both endpoints must accept Finned-Top OSFP — not compatible with Flat-Top OSFP cages on either end. For mixed Flat-to-Finned configurations, see the MCA4J80-N003-FTF variant. Not compatible with QSFP-DD or QSFP112 ports. Reach beyond 3m is not supported by this part number.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS verifies link integrity and signal quality at NDR rates on every active cable before shipment. We provide compatibility consultation for Quantum-2 fabric builds, global shipping with handling time of 1–3 business days, and direct technical support for AI/HPC fabric design. Visit www.tes-itsolutions.com for the full inventory.