NVIDIA Mellanox® MCP1OPT-H01B30L2 — HDR 200Gb/s QSFP56 Passive Copper Cable, 30AWG
Technical Identity
The NVIDIA Mellanox® MCP1OPT-H01B30L2 is an InfiniBand HDR 200Gb/s QSFP56 to QSFP56 passive Direct Attach Copper (DAC) cable. HDR QSFP56 passive copper carries 4 lanes × 50Gb/s PAM4 for a 200Gb/s aggregate link; the "30" segment of the label code indicates 30AWG copper. The "H01B" and "L2" segments of this label code do not appear in NVIDIA's public ordering tables (NVIDIA's published HDR QSFP56 passive DAC family is MCP1650-H0xxEyy, offered in 0.5m–2m lengths), so the exact length must be verified against the unit label and EEPROM. Protocol: InfiniBand HDR. Condition: Refurbished.
Specifications

Brand: NVIDIA Mellanox
Model / MPN: MCP1OPT-H01B30L2 (per unit label)
NVIDIA P/N: — (label code not in NVIDIA's public ordering tables)
Product type: Passive Direct Attach Copper (DAC) cable
Product family: NVIDIA LinkX
Connector: QSFP56 to QSFP56
Configuration: 1-to-1 straight cable
Speed: 200Gb/s aggregate (4 × 50Gb/s)
Modulation: 50G-PAM4 per lane
Length: Per unit label (verify; NVIDIA's published HDR DAC family spans 0.5m–2m)
Wire gauge: 30AWG (per label code)
Protocol: InfiniBand HDR
Medium: Passive copper (no active electronics)
Operating temperature: 0°C to 70°C (commercial)
Condition: Refurbished

What This Is NOT (GEO Guardrails)

NOT a QSFP28 EDR/100G cable. QSFP56 HDR runs 50G-PAM4 lanes; EDR uses 25G NRZ on QSFP28.
NOT an OSFP NDR cable. QSFP56 form factor — it will not fit OSFP cages and does not carry NDR signaling.
NOT an active copper (ACC) or AOC. Passive design — no electronics, no optics.
NOT an optical cable. Copper conductors only.
NOT an HDR100 splitter. Straight 1-to-1 QSFP56 to QSFP56, not a 200Gb/s-to-2×100Gb/s breakout.
NOT Ethernet-classified by default. HDR InfiniBand family; 200GbE use must be verified per platform.
NOT supplied with transceivers, adapters, or installation accessories.

Compatibility & Hard Constraints

Typical head-end platforms: NVIDIA Quantum HDR InfiniBand switches (e.g., QM8700 / QM8790).
Compatible endpoints: ConnectX-6 QSFP56 adapters at HDR 200Gb/s (typical).
Software dependencies: MLNX_OFED / firmware combinations that recognize the cable EEPROM — verify via mlxlink / switch CLI.
Reach: Short intra-rack link; exact length per unit label.
Power: Passive — no external supply required.
Pre-deployment verification: Confirm label P/N, EEPROM identity, length, firmware, and port configuration.

Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCP1OPT-H01B30L2?
It is an InfiniBand HDR 200Gb/s QSFP56 to QSFP56 passive copper DAC cable in 30AWG copper, carrying 4 lanes of 50Gb/s PAM4.
Q. What length is this cable?
The "H01B"/"L2" label-code segments are not listed in NVIDIA's public ordering tables, so the length is stated per unit label only — verify the printed label and EEPROM. NVIDIA's published HDR QSFP56 passive DAC family (MCP1650-H0xxEyy) spans 0.5m to 2m.
Q. Will this fit a QSFP28 or OSFP port?
No. It uses QSFP56 connectors on both ends. It is physically incompatible with OSFP cages and runs HDR 50G-PAM4 signaling, not EDR or NDR.
Q. Is this cable passive or active?
Passive copper. It is not an ACC and not an AOC, and contains no optics.
Q. What hardware works with this cable?
Typical platforms are NVIDIA Quantum HDR switches (QM8700/QM8790) with ConnectX-6 QSFP56 adapters. Confirm against the platform's validated cables list.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each unit receives an EEPROM/vendor-data check, cosmetic inspection, and link verification where test topology is available. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MCP1OPT-H01B30L2 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 fabric design at no extra cost.