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Dell ConnectX-4 LX dual-port 25GbE PCIe network adapter card

DELL

DELL MRT0D ConnectX-4 LX 25GbE CX4121C Dual Port network card

SKU CH-K2Q3-0TT12

Dual-port 25 Gigabit Ethernet adapter with PCI Express interface for high-performance server connectivity

  • InterfacePCI-Express
  • Dual-port design doubles 25 GbE throughput
  • PCI-Express interface fits Gen3 server slots
  • ConnectX-4 LX engine offloads overlay network tunneling
  • Plug-in card form factor installs without cables
  • Dell part MRT0D matches CX4121C specification

25 GbE dual-port adapter

The Dell MRT0D ConnectX-4 LX is a dual-port 25 Gigabit Ethernet network adapter designed for PCI Express Gen3 servers in enterprise data centres, cloud infrastructure and high-performance computing clusters. It delivers high-throughput, low-latency connectivity for demanding server workloads.

PCI Express Gen3 interface

The card plugs into a PCI Express Gen3 slot, which is the single specification that determines whether this adapter fits the target server platform. Compatibility depends on the host system providing a Gen3-capable slot with the correct mechanical and electrical configuration.

Hardware offload engines

On-board hardware offload engines accelerate overlay network tunnelling protocols, reducing CPU utilisation for encapsulation and decapsulation tasks. This capability improves overall server efficiency when running virtualised or containerised workloads that rely on network virtualisation.

Highlights

  • Dual-port design doubles 25 GbE throughput
  • PCI-Express interface fits Gen3 server slots
  • ConnectX-4 LX engine offloads overlay network tunneling
  • Plug-in card form factor installs without cables
  • Dell part MRT0D matches CX4121C specification

Specifications

BrandDell
Part NumberMRT0D
InterfacePCI-Express

Questions about this item

What throughput can each port deliver in a live server?

Each port supports up to 25 Gigabit Ethernet connectivity for high-speed data transfer.

Which PCI Express generation does the adapter use?

The card plugs into a PCI Express Gen3 slot for server installation.

What slot width and bracket style does the card require?

It is a dual-port plug-in card designed for a standard PCI Express slot.

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