NVIDIA Mellanox ConnectX-4 MCX414A-GCAT

The NVIDIA Mellanox ConnectX-4 MCX414A-GCAT is a dual-port 50GbE Ethernet (EN) network adapter that provides two QSFP28-based 50Gb/s Ethernet ports over a shared PCIe 3.0 x8 host interface. It targets enterprise and cloud servers that need port redundancy or link aggregation on Ethernet-only fabrics, with RoCE v2 support delivering RDMA-class low latency and CPU offload for storage and virtualization traffic. Built around the Mellanox MT27708A0-FDCF-CE controller, part of the ConnectX-4 EN silicon family, it is intended for Ethernet deployments where InfiniBand support is not required. Because both ports share a PCIe 3.0 x8 interface, aggregate throughput is bounded by host-side bandwidth when both ports are driven near line rate simultaneously; customers needing full concurrent line rate on both ports should evaluate the PCIe 3.0 x16 MCX416A-GCAT. As a ConnectX-4 generation adapter (circa 2015-2018), it remains a widely deployed, field-proven building block across enterprise and cloud infrastructure. The MCX414A-GCAT ships under NVIDIA ordering SKU 900-9X426-0055-ST0.