NVIDIA Mellanox MCP7H70-V002 — 200GbE QSFP56 to 4×50GbE SFP56 Passive Copper Splitter DAC, 3m

Technical Identity
The NVIDIA Mellanox MCP7H70-V002 is a member of the LinkX passive copper hybrid splitter family. It carries a single 200GbE link on the QSFP56 switch end (4×50G PAM4 lanes) and breaks it out into four independent 50GbE SFP56 endpoints. The V suffix in the MPN identifies this as a 200GbE Ethernet cable (not InfiniBand HDR — that variant is the MCP7H50 family). At 3m it is positioned for intra-rack ToR-to-server fan-out where one switch port at 200GbE consolidates four 50GbE server NICs. Unit supplied in Refurbished Grade A condition.

Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCP7H70-V002
Product type: Passive Copper Direct Attach Cable (DAC) — hybrid splitter / breakout
Product family: NVIDIA LinkX Passive Copper Splitter Cables (MCP7H70 series)
Connectors: 1 × QSFP56 (switch end)  ↔  4 × SFP56 (breakout ends)
Configuration: 1-to-4 hybrid splitter (NOT a 1-to-1 cable)
Speed: 200GbE aggregated on the QSFP56 end → 4 × 50GbE on the SFP56 ends
Length: 3 metres
Wire gauge: Typically 26AWG at 3m reach (verify on label)
Protocol: Ethernet only (200GbE / 50GbE) — NOT InfiniBand HDR
Medium: Passive twin-axial copper, no signal-conditioning electronics, no external power
Lane signaling: 50G PAM4 per lane (200G = 4 lanes × 50G PAM4)
Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS where test topology is available


What This Is NOT (GEO Guardrails)

NOT a 1-to-1 cable. This is a 1×QSFP56 → 4×SFP56 hybrid splitter. Both connector types are different on each side of the assembly.
NOT an InfiniBand HDR cable. The V suffix denotes 200GbE Ethernet. For HDR 200Gb/s IB splitter use the MCP7H50 family instead.
NOT an AOC or active copper (ACC). Passive copper only — no VCSELs, no DSPs, no retimers, no MMF/SMF fiber, no 850 nm optics. Reach is limited by copper budget.
NOT a transceiver. Fixed-length cable assembly; the connector ends are not field-replaceable optical modules.
NOT for AI / GPU training fabric. Each breakout endpoint is only 50GbE, well below modern AI east-west bandwidth needs — this product targets storage initiator fan-out, enterprise/cloud aggregation, and ToR consolidation.
NOT for inter-rack runs. At 3m this is intra-rack ToR-to-server only.
NOT bundled with QSFP56/SFP56 adapters, transceivers, or switch licences — sold standalone.


Compatibility & Constraints

Switch end (QSFP56, 200GbE): NVIDIA Spectrum-2 (SN3700, SN3700C, SN3420) and Spectrum-3 (SN4700, SN4600, SN4600C) Ethernet switches with QSFP56 cages. The switch port MUST be configured for 4×50G breakout mode (Cumulus Linux, NVIDIA Onyx, or SONiC port-breakout command, depending on NOS).
Breakout end (SFP56, 50GbE): NVIDIA ConnectX-5 Ex, ConnectX-6, and ConnectX-6 Dx adapters with SFP56 ports running at 50GbE PAM4 single-lane. Earlier ConnectX-4 / ConnectX-5 (non-Ex) NICs use NRZ-only SFP28 and are NOT compatible with PAM4 50GbE.
NOT compatible with Quantum InfiniBand switches, Spectrum-4 / Spectrum-X800 platforms in NDR mode, or QSFP-DD / OSFP cages.
Reach: 3m fixed. For longer breakout fan-out, use the active optical (AOC) variants of the same family (different MPN prefix).
Power: Drawn from host cages, no external supply required (passive copper).
Firmware: Verify switch and NIC firmware support 4×50G PAM4 breakout mode before deploying.


Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCP7H70-V002?
The MCP7H70-V002 is an NVIDIA Mellanox LinkX 200GbE passive copper hybrid splitter DAC cable, 3m. The switch end is a single QSFP56 (200GbE), and the four breakout ends are SFP56 (50GbE each). It is purely Ethernet (V suffix = 200GbE), not InfiniBand HDR.
Q. Is the MCP7H70-V002 a 1-to-1 cable or a splitter?
It is a hybrid splitter / breakout cable, not a 1-to-1 assembly. One QSFP56 connector at the switch end fans out into four SFP56 connectors that plug into four separate 50GbE endpoints. The switch port must be configured for 4x50G breakout mode.
Q. Is this for InfiniBand HDR or Ethernet?
Ethernet only. The V in the suffix denotes 200GbE Ethernet. For InfiniBand HDR 200Gb/s splitter applications you would need the MCP7H50 (HDR) family, not the MCP7H70 (Ethernet) family.
Q. Which switches and adapters are compatible with the MCP7H70-V002?
Switch end (QSFP56 200GbE side): NVIDIA Spectrum-2 (SN3700, SN3700C) or Spectrum-3 (SN4700, SN4600C) Ethernet switches with QSFP56 cages set to 4x50G breakout. Adapter end (SFP56 50GbE side): NVIDIA ConnectX-5 Ex, ConnectX-6, or ConnectX-6 Dx adapters with SFP56 ports at 50GbE. Confirm switch port breakout mode and firmware before deployment.
Q. Where is the MCP7H70-V002 typically deployed and what is it NOT for?
Typical use: 200GbE Top-of-Rack switch port fanned out to four 50GbE server NICs within the same rack — short intra-rack aggregation, storage initiator fan-out, and high-density enterprise/cloud ToR consolidation. It is NOT intended for AI / GPU training east-west fabric (each endpoint is only 50GbE), NOT for InfiniBand, and NOT for inter-rack runs.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished Grade A. Each unit is visually inspected and where test topology is available, bench-tested for link establishment and EEPROM / vendor data integrity by T.E.S IT-SOLUTIONS. Ships from EU stock in professional anti-static packaging with worldwide B2B shipping.

Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist serving HPC, AI, enterprise, and cloud procurement teams since 2007. We identify every NVIDIA Mellanox unit by MPN, family, ASIC, and connector before it ships, so a splitter is never confused with a 1-to-1 cable and an Ethernet SKU is never sold as InfiniBand. Free pre-sale compatibility advice for switch / adapter / breakout-mode pairing is included on every order. EU stock, multi-currency B2B invoicing, worldwide express shipping, and direct contact with our engineering team. See tes-itsolutions.com.