Mellanox MCX512A-ACUT ConnectX-5 NIC 25GBe


Dual-port SFP28 network interface card

Supports Ethernet speeds of 10/25GbE

PCIe3.0 x8 host interface with UEFI support (x86/ARM)

Tall bracket height

Features hardware-based accelerations including Signature Handover (T10-DIF), embedded PCIe switch, and NVMe over Fabric target offloads

Up to 75 million messages per second (Mpps) packet rate with low 750ns latency

Advanced Open vSwitch offloads for high packet rates and reduced CPU resource consumption

Standard height, full-length PCIe card form factor

Compatible with Windows, Linux, VMware, and FreeBSD operating systems

Managed using Mellanox ConnectX Management Tools

RoHS compliant and certified by FCC, CE, VCCI, RCM, C-Tick, UL, RoHS, and REACH

1-year limited manufacturer warranty included


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  • Up to 10/25Gb/s Ethernet Adapter Cards

    ConnectX-5 MCX512A-ACUT Ethernet network interface cards provide high performance and flexible solutions with up to two ports of 10/25GbE connectivity, 750ns latency, up to 200 million messages per second (Mpps), and a record setting 197Mpps when running an open source Data Path Development Kit (DPDK) PCIe (Gen 4.0). For storage workloads, ConnectX-5 delivers a range of innovative accelerations, such as Signature Handover (T10-DIF) in hardware, an embedded PCIe Switch, and NVMe over Fabric target offloads. ConnectX-5 adapter cards also bring advanced Open vSwitch offloads to telecommunications and cloud data centers to drive extremely high packet rates and throughput with reduced CPU resource consumption, thus boosting data center infrastructure efficiency.

    ConnectX-5 adapter cards are available for PCIe Gen 3.0 and Gen 4.0 servers and provide support for 1, 10, 25, 40, 50 and 100 GbE speeds in stand-up PCIe cards, OCP 2.0, and OCP 3.0 form factors. ConnectX-5 cards also offer advanced Multi-Host and Socket Direct technologies.


    Tag matching and rendezvous offloads

    Adaptive routing on reliable transport

    Burst buffer offloads for background checkpointing

    NVMe over Fabric offloads

    Backend switch elimination by host chaining

    Embedded PCIe switch

    Enhanced vSwitch/vRouter offloads

    Flexible pipeline

    RoCE for overlay networks

    PCIe Gen 4.0 support

    RoHS compliant

    ODCC compatible

    Various form factors available


    Up to 100Gb/s connectivity per port

    Industry-leading throughput, low latency, low CPU utilization and high message rate

    Innovative rack design for storage and Machine Learning based on Host Chaining technology

    Smart interconnect for x86, Power, Arm, and GPU-based compute & storage platforms

    Advanced storage capabilities including NVMe over Fabric offloads

    Intelligent network adapter supporting flexible pipeline programmability

    Cutting-edge performance in virtualized networks including Network Function Virtualization (NFV)

    Enabler for efficient service chaining capabilities

    Efficient I/O consolidation, lowering data center costs and complexity

Product Name Mellanox MCX512A-ACUT ConnectX-5 EN
Network Interface Dual-port SFP28
Ethernet Speeds 10/25GbE
Host Interface PCIe3.0 x8
UEFI Support Enabled (x86/ARM)
Bracket Height Tall
Features Hardware-based accelerations: Signature Handover (T10-DIF), embedded PCIe switch, NVMe over Fabric target offloads
Packet Rate Up to 75 million messages per second (Mpps)
Latency 750ns
Offloads Advanced Open vSwitch offloads
Form Factor Standard height, full-length PCIe card
OS Support Windows, Linux, VMware, FreeBSD
Management Mellanox ConnectX Management Tools
Dimensions 167.64mm x 111.15mm
Weight 0.22 kg
Power Consumption Typical: 9.6W, Maximum: 13.6W
RoHS Compliance Yes
Certification FCC, CE, VCCI, RCM, C-Tick, UL, RoHS, REACH
Warranty 1-year limited warranty



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