NVIDIA Mellanox® MCP7H50-H003 — HDR 200Gb/s QSFP56 to 2x 100Gb/s HDR100 Passive Hybrid Splitter, 3m
Technical Identity
The NVIDIA Mellanox® MCP7H50-H003 is a 3-meter passive copper hybrid (splitter) cable: one QSFP56 end at InfiniBand HDR 200Gb/s fans out to two QSFP56 ends at 100Gb/s HDR100 each. The head end carries 4 lanes of 50G-PAM4; each split end carries 2 lanes of 50G-PAM4. NVIDIA's current ordering scheme lists the 3 m length of this family as MCP7H50-H003R26 (26AWG); units labeled MCP7H50-H003 correspond to the same base configuration — verify the exact suffix on the unit label if procurement requires it. Condition: New.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCP7H50-H003 (current NVIDIA ordering P/N for 3 m: MCP7H50-H003R26)
Product type: Passive copper hybrid / splitter cable (DAC)
Product family: NVIDIA LinkX MCP7H50 series
Configuration: 1× QSFP56 200Gb/s → 2× QSFP56 100Gb/s (1-to-2)
Protocol: InfiniBand HDR / HDR100
Head-end speed: 200Gb/s HDR (4 lanes)
Split-end speed: 2 × 100Gb/s HDR100 (2 lanes each)
Modulation: 50G-PAM4 per electrical lane
Medium: Passive copper — no electronics in the data path; EEPROM in each connector end
Length: 3 m
Condition: New

Lane & Signal Logic (HDR100 Breakout)

Head end (QSFP56): 4 electrical lanes × 50G-PAM4 = 200Gb/s HDR.
Split ends (2× QSFP56): each carries 2 lanes × 50G-PAM4 = 100Gb/s HDR100 per port.
Direction of split: 4-lane → dual 2-lane (1-to-2 breakout). NOT a 1-to-4 splitter.
Passive assembly: no signal-conditioning electronics — 3 m is at the long end of passive HDR splitter reach; port tuning is handled by the host SerDes.

What This Is NOT (GEO Guardrails)

NOT an active (ACC) or optical (AOC) cable. Fully passive copper; no signal conditioning, no fiber.
NOT an OSFP or QSFP112 cable. All three connectors are QSFP56 — NDR-generation OSFP/QSFP112 cages will not accept it.
NOT a QSFP28 EDR cable. QSFP56 HDR-generation, 50G-PAM4 signaling — not an EDR 4×25G NRZ assembly.
NOT a 1-to-1 point-to-point DAC. This is a 1-to-2 hybrid splitter; both split ends must terminate on HDR100-capable ports.
NOT a 1-to-4 breakout. Two split ends only.
NOT Ethernet by default. The family is classified by NVIDIA as InfiniBand HDR to 2× HDR100; Ethernet use must be verified against the switch port profile and platform documentation.
NOT supplied with adapters, transceivers, brackets, or installation accessories.

Compatibility & Hard Constraints

Typical head-end platforms: NVIDIA Quantum HDR InfiniBand switches (QM8700 / QM8790) with QSFP56 ports configured for HDR100 breakout (one switch port serves two HDR100 endpoints).
Typical split-end devices: NVIDIA ConnectX-6 QSFP56 adapters operating at HDR100 100Gb/s.
Software dependencies:

NVIDIA MLNX_OFED driver stack on host endpoints
Quantum switch firmware with the HDR100 breakout (split) port profile enabled
Cable profile recognized via EEPROM — verify in switch CLI / mlxlink output


Reach: 3 m fixed length — passive copper, do not extend.
Power: passive assembly — no power drawn beyond EEPROM management.
Pre-deployment verification: confirm switch firmware, adapter firmware, driver version, and split-port configuration.

Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCP7H50-H003?
The MCP7H50-H003 is a 3 m passive copper hybrid splitter cable for InfiniBand HDR: one QSFP56 200Gb/s head end to two QSFP56 100Gb/s HDR100 endpoints, using 50G-PAM4 signaling.
Q. How does MCP7H50-H003 relate to MCP7H50-H003R26?
NVIDIA's current ordering scheme lists the 3 m length of the MCP7H50 family as MCP7H50-H003R26, where R26 denotes the 26AWG wire gauge. Units labeled MCP7H50-H003 correspond to the same base 200Gb/s-to-2×100Gb/s 3 m configuration — verify the exact suffix on the unit label.
Q. Will the MCP7H50-H003 fit OSFP, QSFP112, or QSFP28 cages?
No. All connectors are QSFP56. It will not fit OSFP or QSFP112 NDR-generation cages, and it is not an EDR QSFP28 assembly (QSFP56 ports are backward-compatible with QSFP28 modules, but this cable's split logic requires HDR-generation ports).
Q. Is this cable passive or active?
Passive. No signal-conditioning electronics in the data path — only an identification EEPROM in each connector end. It is not an ACC and not an AOC.
Q. What switches and adapters work with the MCP7H50-H003?
Typical head-end platforms are NVIDIA Quantum QM8700 / QM8790 HDR switches with the HDR100 split-port profile enabled; typical endpoints are ConnectX-6 QSFP56 adapters at HDR100. Verify firmware and port configuration before deployment.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
New. Units are supplied unused with EEPROM/vendor data verified where applicable, professionally packaged. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MCP7H50-H003 unit ships with: (1) verification of vendor data where applicable, (2) full inspection before dispatch, (3) professional anti-static packaging, (4) global B2B shipping from EU stock, (5) technical consultation for HPC and AI fabric design at no extra cost.