What is the lane configuration of the MCC4Q30C-002 at QDR?

The cable carries QDR signaling across 4 lanes at 10Gb/s each, for an aggregate 40Gb/s signaling (32Gb/s data after 8b/10b encoding).

Will the MCC4Q30C-002 work in a QSFP+ FDR or QSFP28 EDR/HDR port?

No. The QSFP (SFF-8436) connector and QDR electrical spec are distinct from QSFP+ FDR and QSFP28 EDR/HDR. Use FDR or EDR-rated cables for those generations.

Is this lot of 5 individually tested?

Yes — each of the 5 cables is link-tested and connector-inspected by T.E.S IT-SOLUTIONS at https://www.tes-itsolutions.com before being packed for shipment.

NVIDIA Mellanox MCC4Q30C-002 40Gb/s QDR InfiniBand QSFP Passive Copper Cable, 2m — Lot of 5 (Refurbished): This is a 2-meter passive copper direct-attach cable terminated with QSFP (SFF-8436) connectors on both ends, designed for 40Gb/s InfiniBand QDR fabric links. It is a fully passive copper assembly, not an active optical or active copper cable, and not a 10/40GbE Ethernet-only DAC. This listing is for a multipack of 5 refurbished units.

Engineering Context

QDR InfiniBand operates at 4× 10Gb/s lanes for an aggregate signaling rate of 40Gb/s (32Gb/s data after 8b/10b encoding). The MCC4Q30C-002 is fully passive — no retimers, no power draw, and no per-port cooling considerations on the switch. Two-meter length sits well inside the QDR passive copper reach budget. The QSFP form factor (SFF-8436) is the original 4-channel 10Gb/s connector that preceded QSFP+ and QSFP28; mechanical compatibility with later QSFP+ ports does not imply electrical compatibility at higher InfiniBand generations.

Deployment & Use Cases

Intra-rack QDR InfiniBand server-to-switch links on legacy MTS3600/MTS3610 and IS5000-series Mellanox QDR fabrics. ConnectX-2 VPI host adapter to QDR switch connections. HPC and storage environments still operating QDR clusters. Fabric repair and spare-cable inventory replenishment for established QDR estates.

Technical Specifications

OEM: NVIDIA Mellanox
Part Number: MCC4Q30C-002
Form Factor: QSFP to QSFP (SFF-8436)
Cable Type: Passive Copper (DAC)
Data Rate: 40Gb/s QDR InfiniBand (4× 10Gb/s)
Length: 2 meters
Protocol: InfiniBand QDR
Power: 0 W (Passive)
Pack Quantity: 5 cables (Lot of 5)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS

Compatibility & Hard Constraints

Compatible with Mellanox QDR InfiniBand switches (IS5000-series, MTS3600, MTS3610) and ConnectX-2 VPI / ConnectX-3 VPI adapters operating in QDR mode. The QSFP (SFF-8436) connector is electrically and mechanically distinct from QSFP+ and QSFP28; it should not be force-fit into newer QSFP+/QSFP28 ports. Not for FDR/EDR/HDR fabrics. Not coded as an Ethernet-only cable; its primary signaling target is InfiniBand QDR.

Why Choose T.E.S IT-SOLUTIONS

T.E.S IT-SOLUTIONS link-tests every passive copper cable for continuity, signal integrity, and connector latching before shipment. Visit tes-itsolutions.com for our complete Mellanox InfiniBand cable inventory. Standard handling time is 1–3 business days with global shipping options.

NVIDIA Mellanox® MCC4Q30C-002 QSFP 40Gb/s QDR Copper Cable 2m Lot of 5

Name: NVIDIA Mellanox® MCC4Q30C-002 QSFP 40Gb/s QDR Copper Cable 2m Lot of 5
SKU: MCC4Q30C-002_Lot of 5_Refurbished

SKU: MCC4Q30C-002_Lot of 5_Refurbished

€57.00

Quantity