NVIDIA Mellanox ConnectX-4 Lx EN MCX4411A-ACUN OCP 2.0
Single-Port 25GbE SFP28 OCP 2.0 Adapter, PCIe 3.0 x8, UEFI Enabled
Host Interface
PCIe 3.0 x8
Port Count
1-port
Port Speed & Connector Type
25GbE, SFP28
Form Factor
OCP 2.0 mezzanine card
RDMA / Network Protocol
RoCE v2 (RDMA over Converged Ethernet)
Product Description
The NVIDIA Mellanox ConnectX-4 Lx EN MCX4411A-ACUN is a single-port 25 Gigabit Ethernet adapter in the OCP 2.0 mezzanine form factor with UEFI-enabled firmware, suited to hyperscale and OEM server platforms that need pre-boot network initialization on a standardized mezzanine NIC. It combines a PCIe 3.0 x8 host interface with one SFP28 port at up to 25Gb/s, and offloads RDMA over Converged Ethernet (RoCE v2) in hardware for low-latency, low-CPU networking. UEFI enablement allows the adapter to be recognized and configured within the platform's UEFI environment prior to OS boot, which can simplify network-based provisioning workflows on OCP-based server trays. Built on the single-chip MT27712A0-FDCF-AE controller, the ACUN variant keeps the compact OCP 2.0 form factor and tool-less serviceability of the family while adding UEFI support relative to the baseline ACAN SKU.