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MCX413A-BCAT

NVIDIA Mellanox ConnectX-4 MCX413A-BCAT

Single-Port 40/56GbE QSFP28 Adapter, PCIe 3.0 x8

P/N: MCX413A-BCAT

Host Interface

PCIe 3.0 x8

Port Count

1-port

Port Speed & Connector Type

40GbE/56GbE, QSFP28 (56GbE requires Mellanox switch)

RDMA / Network Protocol

RoCE v2 (RDMA over Converged Ethernet)

Controller / ASIC

MT27708A0-FDCF-CE (ConnectX-4 EN)

Regulatory Certifications

Product Description

The NVIDIA Mellanox ConnectX-4 EN MCX413A-BCAT is a single-port 40/56 Gigabit Ethernet adapter card built on the full ConnectX-4 EN controller (MT27708A0-FDCF-CE), delivering high-bandwidth connectivity through a QSFP28 port over a PCIe 3.0 x8 host interface. When paired with a Mellanox switch, the port can be configured to run at 56GbE Ethernet speed, giving system integrators flexibility to match link speed to the surrounding fabric. The card supports RDMA over Converged Ethernet (RoCE v2) for low-latency, CPU-efficient data movement, and inherits the full hardware offload set of the ConnectX-4 EN generation, including stateless offloads and overlay network acceleration. As a legacy but widely deployed adapter, the MCX413A-BCAT remains a common building block in enterprise, cloud, and HPC-adjacent server environments that require 40/56GbE bandwidth on a standard PCIe add-in card.