The NVIDIA Direct Attach Copper Cable 930-51986-0000-000 InfiniBand 0.4 m QSFP to QSFP Black is compared with several alternative solutions from the same brand, including the Nvidia Mellanox MMA2P00-AS transceiver and various fibre optic cables such as NVIDIA Mellanox MCP1600-C00AE30N, NVIDIA MFP7E40-N010, NVIDIA MFP7E10-N050, and NVIDIA MC3309124-005. All these products are designed for enterprise data centers and high-performance computing environments, but they differ significantly in transmission medium (copper versus fibre optic), connector types, and lengths, which dictates their suitability for specific network topologies.
⚙️ The technical specifications comparison covers the cable and interface type, connection length, connector characteristics, and the practical application of each solution.
| Parameter | NVIDIA Direct Attach Copper Cable 930-51986-0000-000 | Nvidia Mellanox MMA2P00-AS | NVIDIA Mellanox MCP1600-C00AE30N | NVIDIA MFP7E40-N010 | NVIDIA MFP7E10-N050 | NVIDIA MC3309124-005 | Practical significance |
|---|
| Product type | Direct attach copper cable (DAC) | Fiber optic network transceiver | Fiber optic cable | Fiber optic cable | Fiber optic cable | Fiber optic cable | Copper is ideal for ultra-short rack links, transceivers require modular setups, and fiber optics handle medium to long distances. |
| Interface & Connectors | QSFP to QSFP | SFP28 | QSFP | MPO to 2x MPO | MPO to MPO | SFP+ to SFP+ | Connectors must match the target ports on switches and servers. |
| Length | 0.4 m | N/A | 0.5 m | 10 m | 50 m | 5 m | Short cables link adjacent devices, while longer options bridge equipment across larger spaces. |
◎ The suitability and use cases comparison helps determine which product aligns best with specific infrastructure requirements.
| Use case | Recommended product | Why |
|---|
| Ultra-short connections within a single server rack | NVIDIA Direct Attach Copper Cable 930-51986-0000-000 | The 0.4-meter copper cable with QSFP connectors provides a direct, cost-effective link for closely positioned hardware. |
| Medium to long-distance networking (5 to 50 meters) | NVIDIA MFP7E10-N050 or NVIDIA MC3309124-005 | Fiber optic cables are necessary for spanning longer distances across server infrastructure and data center rows. |
The NVIDIA Direct Attach Copper Cable 930-51986-0000-000 differs from alternative transceivers and fibre optic cables by utilizing a copper medium and an ultra-short 0.4-meter length with QSFP connectors. It is best suited for high-density intra-rack connections in high-performance computing environments. A buyer should prefer this option when looking for a reliable, direct, and short-range QSFP connection without the need for optical modules or long cable runs.
