NVIDIA Mellanox ConnectX-6 MCX631432AN-ADAB OCP3.0
ConnectX-6 Lx EN, Dual-Port 25GbE SFP28, OCP 3.0, PCIe 4.0 x8
Host Interface
PCIe 4.0 x8
Port Count
2-port (Dual-port)
Port Speed & Connector Type
25GbE, SFP28
RDMA / Network Protocol
Ethernet, RoCE v2 (RDMA over Converged Ethernet)
Form Factor
OCP 3.0 Small Form Factor (SFF)
Product Description
The NVIDIA Mellanox ConnectX-6 Lx EN network adapter MCX631432AN-ADAB is a dual-port 25GbE OCP 3.0 form-factor smart network interface card designed for power- and cost-efficient Ethernet connectivity in cloud and enterprise servers. Delivered as an OCP 3.0 Small Form Factor (SFF) module for tool-less, hot-swappable installation in OCP-compliant server chassis, the card connects via a PCIe 4.0 x8 host interface to dual SFP28 cages supporting RoCE v2 RDMA for efficient, low-latency east-west traffic. This base configuration ships without hardware Secure Boot or inline Crypto offload, keeping cost and power draw to a minimum for large-scale, cost-sensitive server fleet rollouts. Built on the MT28942A0-YCCF-AE controller, the MCX631432AN-ADAB targets high-volume hyperscale and enterprise cloud deployments where OCP 3.0 serviceability, low power draw and predictable 25GbE throughput matter most. It is supported by NVIDIA's standard OFED, WinOF-2 and DOCA driver stacks across major operating systems.