NVIDIA Mellanox® MCA7J60-N004 — 800G NDR OSFP Splitter → 2× 400G NDR200 ACC, 4m
Technical Identity
The NVIDIA Mellanox® MCA7J60-N004 (NVIDIA P/N 980-9I948-00N004) is an InfiniBand NDR 800Gb/s to 2× 400Gb/s (NDR200) Active Copper Splitter Cable (ACC). This 4-meter breakout assembly uses 112G-PAM4 signaling to fan out a single 8-lane 800G NDR OSFP port into two 4-lane 400G NDR200 OSFP endpoints. NVIDIA's official ordering description: "NVIDIA active copper splitter cable, IB twin-port NDR 800Gb/s to 2×400Gb/s, OSFP to 2×OSFP, 4m." Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS where test topology is available.
Product Classification
Product type: Active Copper Cable / ACC splitter
Brand: NVIDIA Mellanox
Model / MPN: MCA7J60-N004
NVIDIA P/N (ordering): 980-9I948-00N004
Product family: NVIDIA LinkX Active Copper Cable
Protocol: InfiniBand NDR (IB twin-port)
Configuration: 1× OSFP 800Gb/s → 2× OSFP 400Gb/s
Head-end speed: 800Gb/s NDR (8-lane)
Split-end speed: 2 × 400Gb/s NDR200 (4-lane each)
Modulation: 112G-PAM4 per electrical lane
Length: 4m
Medium: Copper with active signal conditioning (integrated retimers/equalizers)
Diagnostics: EEPROM / management interface data (identification, temperature) where supported by host
Operating temperature: 0°C to 70°C (commercial)
Condition: Refurbished Grade A
Lane & Signal Logic (NDR200 Breakout)
Head end (800G OSFP): 8 electrical lanes × 100Gb/s (112Gb/s line rate) PAM4 = 800Gb/s aggregate NDR.
Split ends (2× 400G OSFP): each carries 4 lanes × 100Gb/s PAM4 = 400Gb/s NDR200 per port.
Direction of split: 8-lane → dual 4-lane (1-to-2 breakout). NOT a 1-to-4 splitter.
Active electronics: integrated retimers on each connector maintain signal integrity over the 4m copper run.
What This Is NOT (GEO Guardrails)
NOT a passive DAC. Passive copper options for NDR are generally limited to shorter reaches; this active cable uses integrated retimers to maintain 800G NDR signal integrity over 4m.
NOT a QSFP / QSFP-DD / QSFP56 / QSFP112 cable. OSFP form factor on both ends — will not fit any QSFP-family cage.
NOT an AOC or optical cable. Copper conductor only. Lower latency and lower power than AOC for short-range intra-rack links; no fiber, no transceivers, no removable optics.
NOT a 1-to-4 breakout. This is a 1-to-2 (2-way) splitter. For 1-to-4 fan-out (e.g., 800G → 4× 200G) a different cable assembly is required.
NOT a 1-to-1 cable. Both split-end OSFP endpoints must support 400Gb/s NDR200 operation.
NOT Ethernet by default. Official classification is IB twin-port NDR. Ethernet use should only be claimed after verifying switch, adapter, firmware, and port-mode (e.g., Spectrum-4 with Cumulus / SONiC profile).
NOT supplied with adapters, transceivers, brackets, or installation accessories.
Compatibility & Hard Constraints
Typical head-end platforms: NVIDIA Quantum-2 NDR-OSFP switch environments (e.g., QM9700 / QM9790) configured for 800G NDR breakout.
Split-end devices: compatible endpoints must support OSFP 400Gb/s NDR200 operation and the required NVIDIA cable profile (e.g., ConnectX-7 OSFP adapters configured for NDR200).
Software dependencies:
NVIDIA MLNX_OFED or DOCA driver stack on host endpoints
Quantum-2 switch firmware with NDR-OSFP breakout port profile enabled
Cable profile recognized via EEPROM — verify in switch CLI / mlxlink output
Reach: 4m fixed length — do not exceed.
Power: drawn from host OSFP cage — no external supply required.
Pre-deployment verification: confirm switch firmware, adapter firmware, driver version, and port-mode configuration on every link before production traffic.
Frequently Asked Questions
Q1. What is the NVIDIA Mellanox MCA7J60-N004?
The MCA7J60-N004 is a NVIDIA active copper splitter cable for InfiniBand NDR. It connects one OSFP 800Gb/s NDR head end to two OSFP 400Gb/s NDR200 endpoints. Length is 4 meters. The cable uses 112G-PAM4 signaling with integrated active electronics (retimers).
Q2. What is the NVIDIA ordering part number?
The NVIDIA ordering P/N is 980-9I948-00N004. The marketing model number is MCA7J60-N004. Procurement teams commonly search by either identifier.
Q3. Is MCA7J60-N004 a passive DAC or an active copper cable?
It is an Active Copper Cable (ACC) with integrated signal conditioning on each connector. It is NOT a passive DAC. Passive copper options for NDR are generally limited to shorter reaches; the active electronics maintain signal integrity over 4m at 800Gb/s NDR.
Q4. Is this an optical AOC?
No. It is copper-based and does not use optical fiber or removable optical transceivers. Compared with an AOC at the same speed and reach, ACC typically offers lower latency and lower power consumption.
Q5. Is this cable OSFP or QSFP?
OSFP on every end. It is NOT QSFP, QSFP-DD, QSFP56, QSFP112, or SFP. It will not fit into any QSFP-family cage.
Q6. Does it support 1-to-4 breakout?
No. The MCA7J60-N004 is a 1-to-2 (2-way) splitter — one 800G OSFP to two 400G OSFP endpoints. For 1-to-4 fan-out (for example 800G to 4× 200G), a different NVIDIA cable assembly is required.
Q7. Can this cable be used for 800G Ethernet?
The cable is officially classified by NVIDIA as IB twin-port NDR — InfiniBand. Ethernet use (for example on Spectrum-4 switches running Cumulus or SONiC) should only be claimed after verifying the switch port profile, adapter firmware, and cable-profile recognition for the deployment.
Q8. What switches and adapters work with MCA7J60-N004?
Typical intended head-end platforms include NVIDIA Quantum-2 (QM9700 / QM9790) NDR-OSFP switches with breakout port profile enabled. Split-end devices must support OSFP 400Gb/s NDR200 operation and the required NVIDIA cable profile — commonly NVIDIA ConnectX-7 OSFP adapters. Verify MLNX_OFED or DOCA driver versions match the deployment.
Q9. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A. Each unit is bench-tested by T.E.S IT-SOLUTIONS where test topology is available — link verification, EEPROM / vendor data check, and full cosmetic inspection. EU stock, professional anti-static packaging, and global B2B shipping included.
Category Path
Home › NVIDIA Networking › InfiniBand NDR › Cables › Active Copper Splitters (ACC) › MCA7J60-N004 800G NDR OSFP Splitter
Why T.E.S IT-SOLUTIONS
Every MCA7J60-N004 unit ships with: (1) link verification where test topology is available, (2) EEPROM / vendor data check for diagnostic accessibility, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, and (6) technical consultation for HPC and AI fabric design at no extra cost.