NVIDIA Mellanox ConnectX-5 MCX542A-ACAN OCP 2.0

The NVIDIA Mellanox ConnectX-5 MCX542A-ACAN is a dual-port 25 Gigabit Ethernet network adapter from the ConnectX-5 EN family, delivered in the OCP 2.0 mezzanine form factor for tool-less installation in Open Compute Project-compliant server chassis. Built on the MT28808A0-FCCF-EV controller with a PCIe 3.0 x16 host interface, it connects to the server motherboard through the OCP mezzanine connector rather than a conventional PCIe slot, freeing up expansion slots for storage or GPU cards in dense hyperscale and enterprise deployments. It supports RDMA over Converged Ethernet (RoCE v2) for low-latency, CPU-efficient network I/O, inheriting the broader ConnectX-5 EN architecture's hardware offload capabilities for overlay networks (VXLAN/NVGRE) and RDMA-accelerated storage access. Distributed by MABLETECH, the MCX542A-ACAN is well suited for hyperscale and OCP-standardized server designs that need dual 25GbE RoCE connectivity in a compact, tool-less mezzanine footprint rather than a traditional add-in card.