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Green PCB network card with two SFP28 ports and tall metal bracket

Universal

Universal MCX512A-ACAT 25GbE Dual-Port SFP28 PCIe 3.0 x8 Tall Bracket

SKU CH-M5YA-V33FJ

Dual-port SFP28 adapter delivers 25GbE connectivity over PCIe 3.0 x8 with NVMe offloads and adaptive routing

  • Dual 25 GbE ports deliver high-throughput connectivity
  • PCIe 3.0 x8 interface provides low-latency host access
  • SFP28 cages support 28 Gb/s transceiver modules
  • NVMe over fabric offloads accelerate storage workloads

ConnectX-5 EN 25GbE dual-port SFP28 card

The Mellanox ConnectX-5 EN adapter provides two 25 GbE SFP28 ports over a PCIe 3.0 x8 interface. It supports tag matching, rendezvous offloads, adaptive routing on reliable transport, burst buffer offloads for background checkpointing and NVMe over fabric offloads. A tall bracket is fitted for standard chassis.

Suited for servers adding high-speed Ethernet links

This card suits administrators who need dual 25 GbE connectivity with advanced offloads for storage and compute workloads. Buyers who need a low-profile bracket, single-port variants or Fibre Channel support should look elsewhere. Compatibility with specific server platforms must be verified before purchase.

How it compares

Measured against everything we stock in Laptop Wireless & Network Cards, at today’s prices. Recalculated every night.

Price $187.99
Pricier than about 70% of the 100 comparable items (median $81.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What does the 25 GbE rating mean when the card is installed in a server?

Each SFP28 port runs at 25 Gb/s, giving two independent 25 Gb/s links for storage or compute traffic.

What does the PCIe 3.0 x8 interface limit in practice?

The x8 lane width caps throughput to the PCIe 3.0 x8 maximum, so sustained rates cannot exceed that bus ceiling.

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