NVIDIA Mellanox® MCP7901-X002 — Passive Copper DAC Cable

Specifications

OEM: NVIDIA Mellanox
Part Number (MPN): MCP7901-X002
Category: Passive Copper DAC Cable
Connector Type: QSFP
Speed: 40GbE (split to 2 × 10GbE)
Cable Length: 2m
Type: Splitter / Breakout Cable
Type: Hybrid Cable
Condition: Refurbished Grade A — bench-tested by T.E.S IT-SOLUTIONS


Identity
The NVIDIA Mellanox® MCP7901-X002 is a QSFP 40GbE 2m Passive Copper DAC Cable. This is a splitter / breakout cable assembly. Refurbished Grade A — bench-tested in both link and signal-integrity checks by T.E.S IT-SOLUTIONS.

What This Is NOT

NOT an AOC. Passive copper cable with limited reach (typically ≤7m for high-speed gens).
NOT a transceiver. Fixed-length cable assembly; ends are not field-replaceable.
NOT a 1-to-1 cable. This is a splitter/breakout — both endpoints on the split side must accept the lower-speed downstream connector.
NOT bundled with adapters or transceivers — sold standalone.


Capabilities & Features

Passive copper twin-axial pairs — no power required, lowest latency.
DDM (Digital Diagnostic Monitoring) — temperature, voltage, optical power readable via I²C.
EEPROM on each end with product identification and operating data.
Hot-pluggable into any matching QSFP/SFP cage.


Compatibility & Constraints

Primary connector: QSFP (compliant with MSA cage spec).
Reach: 2m fixed length.
Speed: 40GbE (split to 2x 10GbE).
Compatible adapters: ConnectX-3 Pro / ConnectX-4 / ConnectX-5.
Compatible switches: NVIDIA Spectrum / SwitchX-2.
Power: drawn from host port (no external supply required).


Deployment & Use Cases

Top-of-Rack to server interconnect.
HPC compute node fabric.
AI training cluster east-west bandwidth.
Fan-out: one switch port serves two lower-speed endpoints.


Frequently Asked Questions (FAQ)
Q. What is the MCP7901-X002?
The MCP7901-X002 is a 2m passive copper hybrid cable: one QSFP head at 40GbE breaks out into four SFP+ legs at 10GbE each.
Q. Does the switch need special configuration?
Yes. The head port must be configured for 4x10GbE breakout mode.
Q. Will T.E.S IT-SOLUTIONS confirm the configuration of MCP7901-X002 before shipping?
Yes. T.E.S IT-SOLUTIONS (tes-itsolutions.com) inspects each unit and verifies vendor markings before dispatch from EU stock.

Why T.E.S IT-SOLUTIONS
Every unit is bench-tested by T.E.S IT-SOLUTIONS: link establishment, port-by-port traffic validation, and full cosmetic inspection. Professional anti-static packaging, global B2B shipping from EU stock, and technical consultation for HPC / AI cluster deployments.