NVIDIA Mellanox ConnectX-6 MCX631432AS-ADAB OCP3.0
ConnectX-6 Lx EN 2-port 25GbE OCP 3.0 Adapter with Secure Boot
Product Family
ConnectX-6 Lx EN (MCX631432AS-ADAB OCP3.0)
Form Factor
OCP 3.0 Small Form Factor (SFF)
Host Interface
PCIe 4.0 x8
Port Count
2-port
Port Speed & Connector Type
25GbE over SFP28
Product Description
The NVIDIA Mellanox ConnectX-6 Lx EN MCX631432AS-ADAB is a dual-port 25GbE OCP 3.0 SmartNIC built on the cost- and power-optimized ConnectX-6 Lx MT28942A0-YCCF-AE controller. It connects through a PCIe 4.0 x8 host interface — half the lane count of the ConnectX-6 Dx family — reflecting ConnectX-6 Lx's role as an efficient, high-volume cloud and enterprise NIC rather than a maximum-bandwidth SmartNIC. Dual SFP28 cages provide line-rate 25 Gigabit Ethernet with RoCE v2 RDMA offload for low-latency, CPU-efficient data movement. As an OCP 3.0 SFF adapter, it installs without tools into OCP-compliant server bays for streamlined fleet deployment and hot-swap serviceability. Hardware-enforced Secure Boot authenticates the adapter's firmware at every boot, protecting against firmware tampering. With essential ASAP² virtual switching offloads at a lower power envelope than ConnectX-6 Dx, the MCX631432AS-ADAB is well suited to cost-sensitive cloud, edge and enterprise deployments that still require verified firmware integrity.