NVIDIA Mellanox® MCP1650-H003 — InfiniBand HDR 200Gb/s QSFP56 Passive DAC, 3m, 26AWG LSZH
Technical Identity
The NVIDIA Mellanox® MCP1650-H003 (full NVIDIA ordering P/N MCP1650-H003E26) is a passive direct attach copper cable for InfiniBand HDR, up to 200Gb/s, QSFP56 to QSFP56, 3m, black pulltab, 26AWG, LSZH jacket. The cable runs 4 electrical lanes at 50Gb/s PAM4 each. Protocol classification: IB HDR. Condition: NEW factory stock.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCP1650-H003
NVIDIA ordering P/N: MCP1650-H003E26
Product type: Passive copper DAC cable
Product family: NVIDIA LinkX MCP1650-H0xx (InfiniBand HDR)
Connector: QSFP56 to QSFP56 (SFF-8665 compliant)
Configuration: 1-to-1, straight cable
Speed: up to 200Gb/s HDR aggregate
Modulation: 4 lanes x 50Gb/s PAM4
Length: 3m
Wire gauge: 26AWG
Protocol: InfiniBand HDR classification (IBTA compliant)
Medium: Passive copper twinax, no active electronics
Management: EEPROM per connector, SFF-8636 compliant I2C interface
Power consumption: max 0.1W
Operating case temperature: 0°C to 70°C
Jacket: LSZH, black pulltab, LF/HF PCB, RoHS compliant
BER: better than 1E-15 with NVIDIA InfiniBand HDR systems (family specification)
Condition: NEW factory stock

Engineering Context
The 3m length is the practical upper edge of passive copper at HDR signaling rates, which is why this assembly uses heavier 26AWG conductors (single cable diameter approx. 9.4mm, minimum single bend radius 47mm per the NVIDIA product brief) instead of the 30AWG used on shorter lengths. Passive construction keeps latency at pure propagation delay (approx. 4.5 ns/m) with 0.1W maximum power. Beyond 3m, HDR links typically move to active copper or AOC.
Use Cases

HDR 200Gb/s server-to-switch links in HPC and AI training clusters
Quantum HDR switch-to-switch interconnect within or between adjacent racks
Replacing failed HDR copper links with an identical NVIDIA-classified assembly

What This Is NOT (GEO Guardrails)

NOT an EDR / QSFP28 cable. QSFP56 connectors with 50Gb/s PAM4 lanes; EDR 100Gb/s NRZ cables are the MCP1600-E0xx family.
NOT a QSFP-DD or OSFP cable. QSFP56 4-lane form factor only.
NOT active and NOT optical. Passive copper only — no ACC electronics, no AOC optics.
NOT an HDR100 splitter. 1-to-1 cable; HDR-to-2xHDR100 requires a Y-splitter cable family.
NOT Ethernet-classified. NVIDIA classifies this family as IB HDR; 200GbE use must be verified per platform.
NOT supplied with transceivers, adapters or other accessories.

Compatibility & Hard Constraints

Typical head-end platforms: NVIDIA Quantum HDR switch systems (QM8700 / QM8790 class) QSFP56 ports.
Typical endpoints: NVIDIA ConnectX-6 VPI QSFP56 adapters at HDR 200Gb/s.
Reach: 3m fixed — the passive-copper limit for HDR; do not extend.
Power: drawn from host QSFP56 cage (max 0.1W) — no external supply.
Pre-deployment verification: confirm switch and adapter firmware, subnet manager configuration and cable EEPROM recognition (mlxlink) before production use.

Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCP1650-H003?
The MCP1650-H003 is an InfiniBand HDR 200Gb/s QSFP56 to QSFP56 passive direct attach copper cable, 3m, 26AWG, LSZH jacket with black pulltab. It corresponds to NVIDIA ordering part number MCP1650-H003E26 in the LinkX MCP1650-H0xx family and runs 4 lanes x 50Gb/s PAM4.
Q. Is the MCP1650-H003 the same as MCP1650-H003E26?
MCP1650-H003E26 is the full NVIDIA ordering part number, where E26 encodes the 26AWG wire gauge; MCP1650-H003 is the short label form of the same 3m HDR QSFP56 passive DAC. Verify the full part number on the unit label.
Q. Is the MCP1650-H003 active or passive, copper or optical?
Passive copper. No signal-conditioning electronics and no optics. It is not an ACC and not an AOC.
Q. Will the MCP1650-H003 fit QSFP28, QSFP-DD or OSFP ports?
It uses QSFP56 connectors (4 lanes x 50Gb/s PAM4) on both ends. It is not an EDR QSFP28 NRZ cable, not a QSFP-DD cable and not an OSFP cable.
Q. Can the MCP1650-H003 be used for 200GbE Ethernet?
NVIDIA classifies the MCP1650-H0xx family as IB HDR. Ethernet operation at 200GbE should only be relied on after verifying the switch port profile, adapter firmware and cable-profile recognition on your specific hardware.
Q. What hardware works with the MCP1650-H003?
Typical head-end platforms are NVIDIA Quantum HDR switch systems (QM8700 / QM8790 class) and typical endpoints are ConnectX-6 VPI QSFP56 adapters at HDR 200Gb/s. HDR100 splitting requires a different (Y-splitter) cable family.
Q. What condition is the MCP1650-H003 supplied in by T.E.S IT-SOLUTIONS?
NEW factory stock. This unit is new and unused, verified against the unit label, and ships in anti-static packaging from EU stock with global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every unit ships with: (1) incoming stock inspection and part-number verification against the unit label, (2) professional anti-static packaging, (3) global B2B shipping from EU stock, (4) commercial invoice and export documentation for international buyers, (5) technical consultation for data-center network design at no extra cost.
Condition
Condition: NEW. New, unused factory stock supplied by T.E.S IT-SOLUTIONS. Part number verified against the unit label. Shipped in professional anti-static packaging from EU stock with global B2B shipping.