Mellanox MCX456A-ECAT Network Interface Card

The Mellanox MCX456A-ECAT dual-port network interface card uses ConnectX-4 to deliver two 100GB QSFP28 ports over a PCIe interface, giving servers the ability to connect to high‑bandwidth fabrics without sacrificing PCIe throughput. This two-port adapter is intended for environments where sustained bandwidth and parallel data streams are essential, such as data centers, high-performance computing clusters, and storage networks. Each QSFP28 port connects to a 100GB link to up‑stream switches or fabrics, enabling flexible topologies and the potential for link aggregation to maximize aggregate bandwidth across a single server. The PCIe connection provides direct, server-side network access, supporting demanding workloads that require consistent, high-capacity network connectivity. The MCX456A-ECAT part number identifies this specific two-port ConnectX-4 solution from Mellanox, a brand long associated with high-performance network adapters for enterprise and data-center deployments.