NVIDIA Mellanox ConnectX-6 MCX631435AC-GDAB OCP3.0
ConnectX-6 Lx EN OCP 3.0 1-port 50GbE adapter, Secure Boot + Crypto
Host Interface
PCIe 4.0 x8
Port Count
1-port
Port Speed & Connector Type
50Gb/s QSFP28
RDMA / Network Protocol
RoCE v2
Secure Boot
Supported
Product Description
The NVIDIA Mellanox ConnectX-6 Lx MCX631435AC-GDAB is a security-hardened OCP 3.0 Small Form Factor network adapter, combining Secure Boot firmware protection with inline IPsec/TLS crypto offload on a single-port 50GbE card built for Open Compute Project-compliant platforms. Built on the ConnectX-6 Lx ASIC (MT28942A0-YCCF-AE) and connected via PCIe 4.0 x8, it delivers a 50Gb/s QSFP28 port with hardware-accelerated RDMA over Converged Ethernet (RoCE v2). Secure Boot validates firmware authenticity at every power-on, while the onboard crypto engine offloads IPsec/TLS encryption in hardware, removing the CPU cost of software-based encryption. Combined with ASAP² switching offload, SR-IOV, and the tool-less serviceability of the OCP 3.0 form factor, the MCX631435AC-GDAB suits security-conscious hyperscale and enterprise fleets that standardize on OCP NIC deployments while requiring firmware integrity assurance and encrypted networking.