Identity & Definition
The NVIDIA Mellanox MC2206730-00A is a 0.5-meter passive copper direct-attach cable (DAC) in the enterprise InfiniBand interconnect category. This is a QDR InfiniBand cable with QSFP connectors on both ends, operating at 40 Gb/s (4x 10 Gb/s lanes). This is a fixed-length integrated cable assembly, not a transceiver with a detachable patch cord. Condition: Refurbished.
Engineering Context
At 0.5 meters, this cable is designed for same-rack or adjacent-rack-unit connections where minimum latency and cable bulk are critical. The passive design provides the lowest possible latency (no signal processing delay) and zero additional power consumption. Passive copper signal integrity at QDR (40 Gb/s) supports reach up to approximately 5 meters; at 0.5 m, signal margin is substantial. The QSFP connector form factor is the original QSFP standard used for QDR InfiniBand.
Deployment & Use Cases
Same-rack InfiniBand QDR connections between compute nodes and top-of-rack switches in HPC clusters. Switch-to-switch short-distance interconnects within modular chassis systems. Intra-rack connectivity for legacy QDR InfiniBand fabric maintenance. Budget-conscious short-reach InfiniBand cabling.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MC2206730-00A
- Speed: QDR InfiniBand (40 Gb/s)
- Cable Type: Passive Copper (DAC)
- Length: 0.5 meters
- Connector: QSFP to QSFP
- Lanes: 4x 10 Gb/s
- Protocol: InfiniBand QDR
- Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
InfiniBand QDR only — this cable operates at 40 Gb/s. It does NOT support FDR (56 Gb/s), EDR (100 Gb/s), HDR (200 Gb/s), or NDR (400 Gb/s) at native speeds. Connecting to FDR/EDR ports will result in negotiation down to QDR at best. QSFP connectors are the original QSFP standard (not QSFP+, QSFP28, or QSFP56). Passive copper at 0.5 m — fixed length, cannot be extended. For longer distances, use active optical cables or fiber with transceivers. Predecessor: DDR (20 Gb/s) cables. Successor: FDR (56 Gb/s) passive copper DACs.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS (tes-itsolutions.com) tests every cable for link integrity and signal quality before shipping. Technical consultation available for InfiniBand fabric cabling design. Global shipping with 1–3 business day handling.