NVIDIA Mellanox ConnectX-4 MCX454A-FCAT
Dual-Port VPI Adapter, 56Gb/s InfiniBand FDR / 56GbE, PCIe 3.0 x8, QSFP28
Host Interface
PCIe 3.0 x8
Port Count
2-port
Port Speed & Connector Type
56Gb/s IB(FDR) / 56GbE, QSFP28
Adapter Type
VPI dual-protocol (InfiniBand & Ethernet)
RDMA / Network Protocol
Native InfiniBand RDMA; RoCE v2 over Ethernet
Product Description
The NVIDIA Mellanox ConnectX-4 MCX454A-FCAT is a dual-port Virtual Protocol Interconnect (VPI) adapter that delivers 56Gb/s InfiniBand FDR or 56GbE Ethernet connectivity from a single QSFP28-based card, letting the same adapter serve InfiniBand fabrics or Ethernet networks without a hardware change. Connected over a PCIe 3.0 x8 host interface, it is built around the Mellanox MT27704A0-FDCF-FV controller and supports both native InfiniBand RDMA and RoCE v2 for low-latency, CPU-offloaded data movement across HPC clusters, storage fabrics, and virtualized data centers. As a ConnectX-4 generation adapter (circa 2015-2018), it remains a well-proven, widely deployed building block for enterprise and cloud infrastructure requiring flexible fabric choice on a single card design. The MCX454A-FCAT ships under NVIDIA ordering SKU 900-9X426-0054-ST0 and is also referenced under OEM part 00YK367 for Lenovo server platforms, reflecting broad OEM qualification.