MCP1660-W02AE26, NVIDIA Mellanox Direct Attach Copper Cable, 400GbE/QSFP-DD/2.5m

The Mellanox MCP1660-W02AE26 is a high-speed DAC cable designed for 400GbE data center and enterprise interconnects. This QSFP-DD to QSFP-DD passive copper assembly is built for short-range, top-of-rack and rack-to-rack links between high-performance switches, routers, and servers. With a 400 Gb/s data rate and 2.5 m length, it helps you build dense, low-latency connections without the power and cost overhead of optical modules. The passive design simplifies deployment and is ideal for environments where cable runs are predictable and under controlled distances, such as modern leaf-spine fabrics in Asia, Europe, Africa, and North America.

The MCP1660-W02AE26 supports 400GbE and is tuned for selected Mellanox/NVIDIA 400G QSFP-DD ports, ensuring stable operation when matched with supported systems. QSFP-DD integrated connectors on both ends provide secure mechanical fit and reliable electrical performance, reducing link errors and unplanned downtime. The 26 AWG wire gauge offers a balance between signal integrity and flexibility, making routing in crowded racks easier while maintaining performance at 400 Gb/s.

For distributors and resellers, this cable is a practical addition to any Mellanox/NVIDIA 400G portfolio, supporting high-volume server and switch deployments. Small and mid-size integrators can use the MCP1660-W02AE26 to standardize on a proven 400GbE copper solution, cutting configuration time and reducing compatibility issues at customer sites. End users benefit from a plug-and-play experience: once connected to compatible 400G QSFP-DD ports, the link comes up quickly, with no complex tuning required.

The MCP1660-W02AE26 is well suited for scale-out clusters, storage backbones, and cloud infrastructure where predictable performance and low latency are key. Its passive copper construction also helps lower overall power consumption and thermal load compared to active optics, which is important in dense racks and high-ambient data halls. When you need a dependable 400GbE QSFP-DD to QSFP-DD interconnect for high-speed switch, router, and server connections, the Mellanox MCP1660-W02AE26 offers a straightforward, cost-effective choice.