NVIDIA Mellanox ConnectX-6 MCX631432AC-ADAB OCP3.0
ConnectX-6 Lx EN, Dual-Port 25GbE SFP28, OCP 3.0, PCIe 4.0 x8, Secure Boot + Crypto
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)
Secure Boot
Supported (✔)
Product Description
The NVIDIA Mellanox ConnectX-6 Lx EN network adapter MCX631432AC-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 variant adds hardware Secure Boot and inline IPsec/TLS Crypto offload, extending platform integrity and encrypted-traffic acceleration to OCP 3.0 server deployments that require hardware-rooted trust. Built on the MT28942A0-YCCF-AE controller, the MCX631432AC-ADAB targets security-conscious hyperscale and enterprise cloud deployments where OCP 3.0 serviceability and encrypted networking must coexist with low power draw and predictable 25GbE throughput. It is supported by NVIDIA's standard OFED, WinOF-2 and DOCA driver stacks across major operating systems.