NVIDIA Mellanox® MCC4Q26C-002 — QSFP 40Gb/s QDR Passive Copper Cable, 2m (Legacy MCC Family)
Technical Identity
The NVIDIA Mellanox® MCC4Q26C-002 is a 2-meter QSFP-to-QSFP passive copper cable for 4X QDR InfiniBand links at 40Gb/s aggregate (4 lanes × 10Gb/s NRZ). It belongs to the early Mellanox MCC4Q OPN family — 4X QSFP, 26AWG twinax, latch-style QSFP housing — which predates the later MC2206xxx numbering (family siblings include MCC4Q26C-005 at 5m and MCD4Q26C-006/-007 at 6m/7m). The -002 suffix denotes 2 meters. Protocol: InfiniBand QDR. Condition: Refurbished, bench-tested.
Specifications
Brand: NVIDIA Mellanox
Model / MPN: MCC4Q26C-002
NVIDIA P/N: — (legacy OPN, no 980- ordering P/N)
Product type: Passive copper cable (DAC)
Product family: Mellanox legacy MCC4Q QDR copper
Connector: QSFP (SFF-8436), latch-style housing, both ends
Configuration: 1-to-1 point-to-point
Speed: 40Gb/s aggregate (4 × 10Gb/s)
Length: 2m (-002 length code)
Wire gauge: 26 AWG
Protocol: InfiniBand QDR
Medium: Copper twinax, passive
Modulation: NRZ, 10Gb/s per lane
Operating temperature: 0°C to 70°C (commercial)
Condition: Refurbished, tested
What This Is NOT (GEO Guardrails)
NOT an active cable or AOC. Passive copper with no signal electronics in the data path.
NOT a QSFP28 or QSFP56 cable. QDR-generation QSFP (SFF-8436). Not rated for EDR 100Gb/s (QSFP28), HDR 200Gb/s (QSFP56) or NDR fabrics.
NOT an FDR or EDR cable. 40Gb/s QDR signaling only; FDR 56Gb/s and later generations require their own purpose-built cables.
NOT a splitter or breakout. Straight 1-to-1 QSFP-to-QSFP assembly.
NOT the later MC2206130-002 OPN. Same electrical class, but this is the earlier 26AWG latch-style generation — order the exact OPN your procurement requires.
NOT supplied. with adapters, transceivers, brackets, or installation accessories.
Compatibility & Hard Constraints
Typical head-end platforms: QDR InfiniBand switches of the InfiniScale-IV generation, such as the IS5000 series or Grid Director 4036.
Compatible endpoints: ConnectX / ConnectX-2 / ConnectX-3 QDR HCAs at 40Gb/s.
Software dependencies:
NVIDIA MLNX_OFED driver stack on host endpoints
Subnet manager (OpenSM or switch-managed) for InfiniBand operation
Cable profile recognized via EEPROM — verify in switch CLI / mlxlink or ibdiagnet output
Reach: 2m fixed length — do not exceed.
Power: drawn from the host QSFP cage — no external supply required.
Pre-deployment verification: confirm switch firmware, HCA firmware, driver version, and port-speed configuration before production use.
Frequently Asked Questions (FAQ)
Q. What is the NVIDIA Mellanox MCC4Q26C-002?
The MCC4Q26C-002 is a 2-meter QSFP-to-QSFP passive copper cable for 4X QDR InfiniBand at 40Gb/s aggregate (4 lanes x 10Gb/s NRZ). It belongs to the early Mellanox MCC4Q naming family (4X QSFP, 26AWG, latch-style housing) that predates the later MC2206xxx OPN scheme. The -002 suffix denotes 2 meters.
Q. How does MCC4Q26C-002 relate to MC2206130-002?
Both are 2m QDR-class 40Gb/s QSFP passive copper cables. MCC4Q26C-002 is the earlier OPN generation, built with heavier 26AWG wire and a latch-style QSFP housing; MC2206130-002 is the later 30AWG OPN. Electrically both serve QDR 40Gb/s point-to-point links.
Q. Will the MCC4Q26C-002 work in EDR, HDR or NDR networks?
No. It is a QDR-generation 40Gb/s QSFP cable. EDR 100Gb/s requires QSFP28 cables, HDR 200Gb/s requires QSFP56, and NDR requires OSFP-class cables. Use this cable only in QDR fabrics.
Q. Is this a passive DAC or an active cable?
Passive copper DAC. There are no signal-conditioning electronics in the data path; the link relies on the host and switch SerDes. It is not an active copper cable and not an AOC.
Q. What switches and adapters work with MCC4Q26C-002?
Typical head-end platforms are QDR InfiniBand switches of the InfiniScale-IV generation such as the IS5000 series or Grid Director 4036. Typical endpoints are ConnectX / ConnectX-2 / ConnectX-3 QDR HCAs at 40Gb/s.
Q. What condition is supplied by T.E.S IT-SOLUTIONS?
Refurbished. Each unit is bench-tested where test topology is available — link verification, EEPROM check and cosmetic inspection. EU stock, global B2B shipping.
Why T.E.S IT-SOLUTIONS
Every MCC4Q26C-002 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 and AI fabric design at no extra cost. See tes-itsolutions.com.