Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8

Dual-Port 25GbE SFP28 | PCIe 3.0 x8 | Low-Profile | RDMA & RoCE | Smart NIC for Cloud, Storage & Telco

The Mellanox ConnectX-5 EN MCX512A-ACAT is a dual-port 25GbE Ethernet adapter card engineered for Web 2.0, cloud data centers, software-defined storage, and telecommunication infrastructure. Built on the intelligent ConnectX-5 core, this PCIe 3.0 x8 low-profile card delivers high throughput (up to 100Gb/s aggregate), sub-microsecond latency, and advanced hardware offload capabilities that minimize CPU overhead while accelerating virtual switching, NVMe over Fabric, and overlay network processing.

As part of the ConnectX-5 EN series, the MCX512A-ACAT supports SFP28 interfaces, backward compatibility with 10GbE and 1GbE, and enables RoCE (RDMA over Converged Ethernet) for efficient remote direct memory access. With ASAP² (Accelerated Switching and Packet Processing) technology, it offloads Open vSwitch (OvS) data-plane tasks, freeing server resources for application workloads.

Q: Does MCX512A-ACAT support RoCE and RDMA?
A: Yes. Full RoCE (RDMA over Converged Ethernet) support, including RoCE for overlay networks, XRC, Dynamically Connected Transport (DCT).

Q: Can I use this card with 10GbE optics?
A: Yes, SFP28 ports auto-negotiate down to 10GbE and 1GbE using appropriate transceivers or DAC cables.

Q: Is SR-IOV supported and how many VFs?
A: Yes, up to 512 Virtual Functions per port, with hardware isolation and QoS.

Founded in 2008, Hong Kong Starsurge Group Co., Limited is a technology-driven provider of network hardware, IT services, and system integration solutions. Serving global clients in government, healthcare, manufacturing, education, finance, and enterprise, Starsurge supplies network switches, NICs, wireless access points, controllers, cables, and IoT solutions.