NVIDIA Mellanox ConnectX-4 MCX4421A-ACAN OCP2.0

The NVIDIA Mellanox ConnectX-4 Lx EN MCX4421A-ACAN is a dual-port 25 Gigabit Ethernet OCP 2.0 mezzanine adapter built around the same ConnectX-4 Lx EN silicon (MT27712A0-FDCF-AE) as the ACUN variant, connecting to the host over a PCIe 3.0 x8 interface with SFP28 ports and RDMA over Converged Ethernet (RoCE v2) offload. This SKU (900-9X414-0053-SN1) is commonly supplied through OEM channels, including cross-referenced Lenovo part numbers (SN30L26463, 01KR931), for hyperscale and enterprise server platforms that standardize on OCP 2.0 mezzanine slots. Like other members of the ConnectX-4 Lx generation, it delivers hardware-accelerated packet processing to reduce host CPU load for network-intensive workloads. Distributors and system integrators should confirm firmware and OEM branding requirements when deploying this SKU into Lenovo-qualified server platforms, as OEM-programmed variants may differ from generic retail firmware in feature enablement and management-stack compatibility.