We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Mellanox ConnectX-4 25GbE PCIe 3.0 network card

Mellanox Technologies

Mellanox Technologies MCX4121A-ACAT ConnectX-4 25Gigabit Ethernet network card PCI-E 3.0

SKU CH-TZSA-AFGSW

Adds a single-port 25 Gigabit Ethernet connection over PCI Express 3.0

  • 25 Gigabit Ethernet throughput for high-speed networks
  • PCI Express 3.0 interface connects to modern motherboards
  • ConnectX-4 controller handles packet processing efficiently
  • New condition guarantees unused factory specification
  • MPN PCB001141 identifies the exact part variant

Single-Port 25GbE ConnectX-4 Adapter

This Mellanox ConnectX-4 card delivers a single 25 Gigabit Ethernet connection over a PCI Express 3.0 slot. It is built for servers or workstations that need higher bandwidth than standard Gigabit links.

Suited for single-link server uplinks

The card fits environments where one 25 Gb/s port satisfies the uplink requirement. It is not for systems that need dual-port redundancy, fibre-channel connectivity, or speeds beyond 25 Gb/s.

PCI Express 3.0 x8 host interface

Installation requires a free PCIe 3.0 slot with sufficient electrical lanes; the board will negotiate at the slot's available width. Verify that your platform provides this interface before purchase.

Highlights

  • 25 Gigabit Ethernet throughput for high-speed networks
  • PCI Express 3.0 interface connects to modern motherboards
  • ConnectX-4 controller handles packet processing efficiently
  • New condition guarantees unused factory specification
  • MPN PCB001141 identifies the exact part variant

Specifications

No published specifications for this item yet.

Questions about this item

Will the MCX4121A-ACAT fit in a standard PCI-E 3.0 slot?

The card uses a PCI-E 3.0 interface and installs in any compatible PCI-E slot on the motherboard.

What is the step people miss when installing the ConnectX-4 card?

The card requires a PCI-E 3.0 slot; confirm the motherboard slot version before seating the card.

Does the MCX4121A-ACAT have any replaceable parts or fans?

The product data lists no replaceable components or cooling fans on this network card.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.