NVIDIA Mellanox ConnectX-6 MCX623432AC-ADAB OCP3.0
ConnectX-6 Dx EN, Dual-Port 25GbE SFP28, OCP 3.0, PCIe 4.0 x16, Secure Boot + Crypto
Host Interface
PCIe 4.0 x16
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 Dx EN network adapter MCX623432AC-ADAB is a dual-port 25GbE OCP 3.0 form-factor smart network interface card that pairs ConnectX-6 Dx-class silicon with an OCP 3.0 Small Form Factor (SFF) module for tool-less installation in OCP-compliant server chassis. The card connects via a PCIe 4.0 x16 host interface — double the lane count of the standalone ConnectX-6 Dx SFP28 cards in this catalog — to dual SFP28 cages supporting RoCE v2 RDMA, giving it additional headroom for multi-queue, multi-tenant and storage-offload workloads. 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 MT28928A0-XCCF-CE controller, the MCX623432AC-ADAB is intended for security-conscious hyperscale and enterprise OCP server platforms that need ConnectX-6 Dx-class Ethernet performance with OCP 3.0 serviceability. It is supported by NVIDIA's OFED, WinOF-2 and DOCA driver stacks across Linux, Windows and VMware environments.