Welcome to Ecer
Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Consent Do not consent
China factories

Chat Now Send Email
China factory - Hong Kong Starsurge Group Co., Limited

Hong Kong Starsurge Group Co., Limited

  • China,Hong kong
  • Verified Supplier
  1. Home
  2. Products
  3. About Us
  4. Contact Us

Leave a Message

we will call you back quickly!

Submit Requirement
  1. Home>
  2. Nvidia Network Card>
  3. Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8

  1. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
  2. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
  3. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
  4. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
  5. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8
  6. China Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC PCIe 3.0 x8

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

  1. MOQ： 1pcs
  2. Price： Negotiate
  3. Get Latest Price
Payment Terms T/T
Supply Ability Supply by project/batch
Delivery Time Based on inventory
Packaging Details outer box
Application Server
Interface Type: network
Ports Dual
Max Speed 25GbE
Connector Type SFP28
Type wired
Condition new and original
model MCX512A-ACAT
name Mellanox Network Card MCX512A-ACAT ConnectX-5 EN Adapter Card 10/25GbE Dual-Port SFP28 PCIe 3.0 x8
keyword Mellanox Network Card
Brand Name Mellanox
Model Number MCX512A-ACAT

View Detail Information

Inquiry by Email Get Latest Price
Chat online Now Ask for best deal

Explore similar products

  1. China NVIDIA ConnectX-8 SuperNIC C8180 800G AI Fabric Adapter for Hyperscale Data

    NVIDIA ConnectX-8 SuperNIC C8180 800G AI Fabric Adapter for Hyperscale Data

    Chat online Now
  2. China NVIDIA ConnectX-8 SuperNIC C8180（900-9X81E-00EX-ST0) 800G AI Networking Adapter

    NVIDIA ConnectX-8 SuperNIC C8180（900-9X81E-00EX-ST0) 800G AI Networking Adapter

    Chat online Now
  3. China NVIDIA ConnectX-8 SuperNIC C8180(900-9X81E-00EX-DT0) 800G AI Networking Adapter

    NVIDIA ConnectX-8 SuperNIC C8180(900-9X81E-00EX-DT0) 800G AI Networking Adapter

    Chat online Now
  4. China NVIDIA ConnectX-7 NDR 400Gb/s InfiniBand Smart Adapter MCX755106AS-HEAT

    NVIDIA ConnectX-7 NDR 400Gb/s InfiniBand Smart Adapter MCX755106AS-HEAT

    Chat online Now
  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability Supply by project/batch
Delivery Time Based on inventory Packaging Details outer box
Application Server Interface Type: network
Ports Dual Max Speed 25GbE
Connector Type SFP28 Type wired
Condition new and original model MCX512A-ACAT
name Mellanox Network Card MCX512A-ACAT ConnectX-5 EN Adapter Card 10/25GbE Dual-Port SFP28 PCIe 3.0 x8 keyword Mellanox Network Card
Brand Name Mellanox Model Number MCX512A-ACAT
High Light Mellanox ConnectX-5 25GbE NIC ，ConnectX-5 SFP28 Smart NIC ，PCIe 3.0 x8 network card
Mellanox ConnectX-5 EN MCX512A-ACAT 25GbE SFP28 RDMA Smart NIC
Dual-Port 25GbE SFP28 | PCIe 3.0 x8 | Low-Profile | RDMA & RoCE | Smart NIC for Cloud, Storage & Telco
Product Overview
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.
Key Features
  • High Performance: Up to 25GbE per port, 200 million messages per second, 750ns latency, hardware-based reliable transport
  • Smart Offloads: OvS/vRouter offload (ASAP²), NVMe-oF target offload, T10-DIF Signature Handover, RoCE for overlay networks
  • I/O & Virtualization: SR-IOV (up to 512 VFs), embedded PCIe switch with up to 8 bifurcations
  • Overlay & Tunneling: Hardware encapsulation/decapsulation for VXLAN, NVGRE, GENEVE, MPLS, NSH
  • Form Factor & Management: Low-profile PCIe 3.0 x8, NC-SI over MCTP, PLDM monitoring & firmware update, UEFI/PXE remote boot
Performance Statistics
25GbE per port bandwidth
750ns ultra-low latency
200M messages per second
Technical Specifications
Product Model MCX512A-ACAT
Product Series Mellanox ConnectX-5 EN
Port Speed & Type 2x 25GbE SFP28 (also supports 10GbE, 1GbE)
Host Interface PCIe 3.0 x8 (compatible with x16 slots)
Form Factor Low-profile PCIe stand-up (bracket included)
Latency 750ns (typical)
Message Rate Up to 200 million messages per second (Mpps)
RDMA Support RoCE, RoCE for overlay networks, XRC, DCT, out-of-order RDMA
Storage Offloads NVMe-oF target offload, T10-DIF (Signature Handover), SRP, iSER, NFS RDMA
Virtualization SR-IOV: up to 512 VFs, 8 PFs per host, address translation, QoS per VM
Compatibility Matrix
Category Supported Options
CPU Architecture x86, ARM, IBM POWER
Hypervisor VMware ESXi, KVM, Hyper-V, Citrix Xen
Storage over Fabric NVMe-oF (target offload), iSER, SRP, SMB Direct, NFS RDMA
DPDK & OvS DPDK 18.11+, OvS with DPDK, ASAP² Offload
Buyer Checklist
  • Confirm server has an available PCIe 3.0 x8 or x16 slot (physical)
  • Verify OS/driver support (OFED or inbox driver)
  • Check SFP28 transceiver compatibility
  • Plan for airflow: low-profile card fits 1U/2U servers
  • For NVMe-oF target offload, review target mode driver support with your OS version
Frequently Asked Questions
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.
Hong Kong Starsurge Group - network hardware provider logo
About Hong Kong Starsurge Group
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.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • Business Type:

    Distributor/Wholesaler,Agent,Exporter,Trading Company,Seller,Other

  • Year Established:

    2008

  • Employee Number:

    50~200

  • Ecer Certification：

    Verified Supplier

Hong Kong Starsurge Group Co. Leading IT Solutions Provider & System Integrator Since Establishment Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac... Hong Kong Starsurge Group Co. Leading IT Solutions Provider & System Integrator Since Establishment Hong Kong Starsurge Group Co. is a technology-driven enterprise specializing in IT network system integration, IoT solutions, and custom software development. With extensive industry expertise ac...

+ Read More

Get in touch with us

  • Reach Us
  • Hong Kong Starsurge Group Co., Limited
  • FLAT 2304, 23/F HO KING, COMMERCIAL CENTRE, 2-16 FAYUEN STREET, MONG KOK KOWLOON HONG KONG
  • https://www.mellanoxnetwork.com/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement

Trade Alert - Delivering the latest product trends and industry news straight to your inbox.

Home Categories About Us
RFQ Report IPR products Privacy Policy Sitemap

© 2026 Chinax.com. All rights reserved.