NVIDIA Mellanox® MCP7Y60-H001 — 400Gb/s Twin-Port OSFP → 2× 200Gb/s QSFP56 HDR Passive Copper Splitter, 1m, Fin-to-Flat
Technical Identity
The NVIDIA Mellanox® MCP7Y60-H001 is a 1-meter passive Direct Attach Copper (DAC) splitter. NVIDIA's official ordering description: "NVIDIA passive copper splitter cable, IB twin port HDR 400Gb/s to 2x200Gb/s, OSFP to 2xQSFP56, 1m." The twin-port OSFP head end carries 8 channels of 50G-PAM4 — two independent 200Gb/s HDR ports, 400Gb/s aggregate — fanning out to two flat-top QSFP56 ends, each 4 × 50G-PAM4 = 200Gb/s (HDR InfiniBand or 200GbE). The finned OSFP top suits air-cooled Quantum-2 / Spectrum-4 switch cages (fin-to-flat). Firmware supports both InfiniBand and Ethernet, enabled automatically by the attached switch. Condition: Refurbished, bench-tested.
Specifications
Brand: NVIDIA Mellanox
Model / MPN: MCP7Y60-H001
Product type: Passive copper DAC splitter (breakout)
Product family: NVIDIA LinkX
Connector: 1× OSFP (finned top) → 2× QSFP56 (flat top)
Configuration: Twin-port 2×200Gb/s OSFP → 2× QSFP56 200Gb/s (1-to-2)
Aggregate speed: 400Gb/s (2 × 200Gb/s HDR)
Per-tail speed: 200Gb/s (4 × 50G-PAM4)
Modulation: 50G-PAM4; downshift to 4×25G-NRZ (EDR/100GbE) supported
Length: 1m, 30 AWG (per official specification)
Protocol: IB twin-port HDR / 200GbE Ethernet (auto-selected by switch)
Medium: Copper, passive — no electronics in the data path
Power: 0.1W per end (management EEPROM only)
Management: CMIS I2C on OSFP end; SFF-8636 I2C on QSFP56 ends
Compliance: OSFP MSA, SFF-8665, RoHS, LSZH jacket
Operating temperature: 0°C to 70°C (commercial)
Condition: Refurbished, tested
Lane & Signal Logic (HDR Twin-Port Breakout)
Head end (OSFP): 8 lanes × 50Gb/s PAM4 as two independent 4-lane 200Gb/s HDR ports = 400Gb/s aggregate. Twin-port OSFP — not a single 400G port.
Split ends (2× QSFP56): each tail carries 4 lanes × 50G-PAM4 = 200Gb/s HDR / 200GbE.
Direction of split: 8-lane twin-port → dual 4-lane (1-to-2). NOT a 1-to-4 splitter.
Passive design: no signal-conditioning electronics; each end powers only its management EEPROM.
What This Is NOT (GEO Guardrails)
NOT a QSFP / QSFP28 / QSFP56 / QSFP-DD cable at the head end. The head end is OSFP and will not fit any QSFP-family cage; only the two tails are QSFP56.
NOT an NDR 400Gb/s cable. HDR generation: twin-port 2×200Gb/s, not a single 400G NDR port. NDR requires 100G-PAM4 OSFP cables (MCP7Y00 / MCA7J60 families).
NOT a 1-to-1 cable and NOT a 1-to-4 breakout. One twin-port OSFP fans out to exactly two QSFP56 endpoints.
NOT an active copper (ACC) or optical (AOC) cable. Passive copper only — no data-path electronics, no optics.
NOT a flat-top OSFP variant. Finned OSFP end (fin-to-flat) for air-cooled Quantum-2 / Spectrum-4 cages.
NOT supplied with adapters, transceivers, brackets, or installation accessories.
Compatibility & Hard Constraints
Typical head-end platforms: NVIDIA Quantum-2 (QM9700 / QM9790) InfiniBand and Spectrum-4 Ethernet switches with finned-top OSFP cages, configured for twin-port 2×200Gb/s operation.
Compatible endpoints: ConnectX-6 / ConnectX-7 QSFP56 adapters and BlueField-2 / BlueField-3 DPUs at 200Gb/s; EDR/100GbE endpoints via 4×25G-NRZ downshift.
Software dependencies:
NVIDIA MLNX_OFED or DOCA driver stack on host endpoints
Switch firmware with the twin-port split profile enabled
Cable profile recognized via EEPROM — verify in switch CLI / mlxlink output
Reach: 1m fixed; family options: 1.5m (MCP7Y60-H01A), 2m (MCP7Y60-H002).
Pre-deployment verification: confirm switch firmware, adapter firmware, driver version, and port-mode configuration.
Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCP7Y60-H001?
A 1-meter NVIDIA passive copper splitter cable: IB twin port HDR 400Gb/s to 2x200Gb/s, OSFP to 2xQSFP56. The twin-port OSFP end (8 channels of 50G-PAM4, two independent 200Gb/s ports, 400Gb/s aggregate) fans out to two QSFP56 ends, each 4 x 50G-PAM4 = 200Gb/s HDR or 200GbE.
Q. Will the OSFP end fit a QSFP, QSFP28, QSFP56 or QSFP-DD cage?
No. The head end is OSFP (OSFP MSA compliant) and is physically and electrically incompatible with any QSFP-family cage. Only the two tail ends are QSFP56.
Q. What does fin-to-flat mean?
The OSFP head end has a finned top — an integrated heat-sink form factor for air-cooled OSFP cages in Quantum-2 and Spectrum-4 switches. The two QSFP56 tails are flat-top, for adapter and DPU cages with riding heat sinks (ConnectX-6/7, BlueField-2/3).
Q. Is this an NDR 400Gb/s cable?
No. This is HDR generation: the OSFP end carries twin 200Gb/s HDR ports (400Gb/s aggregate), not a single NDR 400G port. NDR fabrics use 100G-PAM4 OSFP cables such as the MCP7Y00/MCA7J60 families.
Q. Is the MCP7Y60-H001 passive or active, copper or optical?
Passive DAC. Per the official NVIDIA specification there are no electronics in the data path; each end consumes only 0.1W for the management EEPROM (CMIS on OSFP, SFF-8636 on QSFP56). Not an ACC, not an AOC.
Q. What switches and adapters work with MCP7Y60-H001?
Typical head-ends: NVIDIA Quantum-2 (QM9700/QM9790) InfiniBand and Spectrum-4 Ethernet switches with finned-top OSFP cages. Typical endpoints: ConnectX-6/7 QSFP56 adapters and BlueField-2/3 DPUs at 200Gb/s; EDR/100GbE endpoints via 4x25G-NRZ downshift.
Q. Does it support both InfiniBand and Ethernet?
Yes. Per the official NVIDIA specification, the cable firmware supports both InfiniBand and Ethernet, enabled automatically by the protocol of the attached switch.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Bench-tested where test topology is available — link verification, EEPROM check, cosmetic inspection. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MCP7Y60-H001 unit ships with: (1) link verification where test topology is available, (2) EEPROM / vendor data check, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, (6) technical consultation for HPC and AI fabric design at no extra cost.