NVIDIA Mellanox MCA4J80-N014 800Gb/s NDR Active Copper Cable, OSFP Twin-Port, 1.4m: This is a 1.4-meter active copper cable (ACC) engineered for 800Gb/s aggregate InfiniBand NDR connectivity using twin-port OSFP form factor (2x 400Gb/s NDR lanes). The cable integrates active electrical signal conditioning to extend copper reach for NDR rates. This is a fixed-length integrated assembly, not a passive DAC and not an optical transceiver pair. This is a new, factory-sealed unit.
Engineering Context
The MCA4J80-N014 carries 8x 100Gb/s PAM4 lanes (4 lanes per OSFP port, twin-port aggregate of 800Gb/s). Active signal conditioning circuits inside each OSFP connector compensate for copper attenuation at NDR data rates, allowing reliable transmission beyond what passive copper can deliver. The OSFP twin-port form factor enables a single cable to drive two independent 400Gb/s NDR ports on Quantum-2 switches, doubling effective port density. Power consumption is significantly lower than equivalent active optical cables of the same reach.
Deployment & Use Cases
Intra-rack and adjacent-rack interconnects within NDR InfiniBand fabrics built on NVIDIA Quantum-2 QM9700 / QM9790 switches. Switch-to-switch spine-leaf links where 1.4m reach is sufficient. AI training cluster fabrics with ConnectX-7 HCAs configured in 2x 400G mode. HPC compute node interconnects in tightly-packed GPU pods.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MCA4J80-N014
Form Factor: OSFP (Twin-Port) to OSFP (Twin-Port)
Aggregate Data Rate: 800Gb/s (2x 400Gb/s NDR)
Lane Configuration: 8x 100Gb/s PAM4
Cable Type: Active Copper Cable (ACC)
Length: 1.4m
Protocol: InfiniBand NDR
Reach Class: Short-reach copper
Condition: New — Factory-sealed
Compatibility & Hard Constraints
Compatible with NVIDIA Quantum-2 NDR InfiniBand switches (QM9700, QM9790) and ConnectX-7 NDR HCAs that expose OSFP twin-port cages. Both ends are OSFP twin-port; this is not a breakout cable to single-port OSFP or QSFP form factors. Not interoperable with HDR (200Gb/s) or EDR (100Gb/s) generation switches without proper port and protocol negotiation. Does not support Ethernet by default; verify protocol mode on the target switch firmware.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS sources NDR-generation cabling directly and tests every active copper cable for lane integrity and connector seating before shipment. Visit www.tes-itsolutions.com for inventory and bulk-quote requests. Standard handling time is 1 to 3 business days.