Request Quote
MCX455A_FCAT

NVIDIA Mellanox ConnectX-4 MCX455A-FCAT

Single-Port VPI Adapter, 56Gb/s InfiniBand FDR / 56GbE, PCIe 3.0 x16, QSFP28

P/N: MCX455A-FCAT

Host Interface

PCIe 3.0 x16

Port Count

1-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

Regulatory Certifications

Product Description

The NVIDIA Mellanox ConnectX-4 MCX455A-FCAT is a single-port Virtual Protocol Interconnect (VPI) adapter delivering 56Gb/s InfiniBand FDR or 56GbE Ethernet connectivity over a single QSFP28 port. Unlike the dual-port MCX454A-FCAT, the MCX455A-FCAT pairs its single port with a full PCIe 3.0 x16 host interface, giving that port generous host-side bandwidth headroom well beyond what a single 56Gb/s link requires — useful in servers where slot availability favors an x16 card even for single-port connectivity. Built around the Mellanox MT27704A0-FDCF-FV controller, it supports both native InfiniBand RDMA and RoCE v2, making it suitable for HPC compute nodes, storage targets, and virtualized hosts that need low-latency, CPU-offloaded networking. As part of the ConnectX-4 generation (circa 2015-2018), it is a widely deployed, field-proven interconnect for enterprise and HPC infrastructure that requires flexible fabric choice on a single adapter design.