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Green PCIe 3.0 x8 network card with one SFP28 port

Mellanox Technologies

Mellanox Technologies MCX4111A-ACAT ConnectX-4 EN 25Gbps PCIe 3.0 1-Port SFP28 network card

SKU CH-87MA-YTBP4

A 25 Gbps single-port SFP28 network adapter using PCIe 3.0 x8 for high-performance server connectivity

  • Rated speed25 Gbit/s
  • Interface typePCI-Express
  • 25 Gbps throughput for high-speed server interconnects
  • PCIe 3.0 x8 interface matches modern server slots
  • ConnectX-4 EN controller offloads overlay network tunneling
  • Single SFP28 port simplifies 25 GbE cabling
  • Part MCX4111A-ACAT identifies the exact adapter model

Single-port 25GbE adapter

The Mellanox ConnectX-4 EN MCX4111A-ACAT is a single-port 25Gbps Ethernet network card built on a PCIe 3.0 x8 interface. It uses an SFP28 cage for optical or direct-attach copper transceivers and includes hardware offload engines for overlay network tunnelling. The card targets PCI Express Gen3 servers in cloud, enterprise and HPC environments.

Ideal for single 25GbE links

This adapter suits administrators adding one 25GbE connection to a Gen3 server where a single SFP28 port meets the port-density requirement. Builders who need multiple ports per slot, higher link speeds or fibre-channel capability should select a different adapter class.

PCIe 3.0 x8 electrical interface

The card requires a PCIe 3.0 slot that can deliver eight electrical lanes; narrower slots will limit throughput. Verify the motherboard or riser provides x8 electrical connectivity before purchase.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $44.99
Cheaper than about 70% of the 1,505 comparable items (median $90.99).

Specifications

Product
Brand nameMellanox
Part numberMCX4111A-ACAT
Performance
Rated speed25 Gbit/s
Ports & slots
Interface typePCI-Express

Questions about this item

What PCIe slot width does the MCX4111A-ACAT require?

The card uses a PCIe 3.0 x8 interface, so it needs an x8 or wider slot on the motherboard.

How is the Mellanox ConnectX-4 EN adapter installed in a server?

Power down the server, insert the card into an available PCIe 3.0 x8 slot, secure the bracket, then connect a 25 Gbps SFP28 transceiver and cable to the port.

When would the SFP28 transceiver on this 25 Gbps card need replacement?

Replace the SFP28 module if link errors appear, the port fails to establish a 25 Gbps connection, or the transceiver exceeds its rated operating temperature.

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