What Ethernet speed does the NVIDIA MCX4121A-ACUT support?

The NVIDIA MCX4121A-ACUT is identified as a 25 GbE Ethernet adapter. It is described as a PCIe 3.0 x8 dual-port SFP28 Ethernet adapter, indicating that each SFP28 port supports 25 GbE connectivity. This makes it suitable for deployments standardizing on 25 GbE switching infrastructure in modern data centers.

How many network ports are available on the MCX4121A-ACUT and what type are they?

The MCX4121A-ACUT is characterized as a dual-port SFP28 Ethernet adapter. This means it provides two SFP28 network interfaces on a single card. These ports are intended for 25 GbE Ethernet connectivity, offering flexibility for link redundancy, traffic separation, or connection to multiple switches.

What host interface does the NVIDIA MCX4121A-ACUT require?

The adapter uses a PCI Express 3.0 x8 host interface. It is explicitly described as a PCIe 3.0 x8 Ethernet adapter, so it must be installed in a compatible PCIe 3.0 x8 or higher slot in the server. This interface provides the bandwidth needed to support the dual 25 GbE SFP28 ports.

Is the MCX4121A-ACUT suitable for UEFI-based server platforms?

Yes, the MCX4121A-ACUT is described as UEFI enabled. This means it is designed to operate within UEFI firmware environments for initialization and configuration. Organizations deploying servers that rely on UEFI for boot and hardware management can integrate this adapter into their platforms with that expectation.

What product family does the MCX4121A-ACUT belong to?

The MCX4121A-ACUT is part of the ConnectX-4 Lx EN series of Ethernet adapters from NVIDIA. It is listed under a category describing PCIe 3.0 x8 dual-port SFP28 Ethernet adapters with 25 GbE capability. This placement associates the card with the ConnectX-4 Lx EN family used in many data center deployments.

900-9X4B0-0053-ST0 - NVIDIA 900-9X4B0-0053-ST0 25 GbE dual SFP28 PCIe 3.0 x8 adapter

Name: NVIDIA 900-9X4B0-0053-ST0 25 GbE dual SFP28 PCIe 3.0 x8 adapter
Brand: NVIDIA
SKU: 900-9X4B0-0053-ST0
Price: 155 USD
Availability: InStock

900-9X4B0-0053-ST0 - NVIDIA 900-9X4B0-0053-ST0 25 GbE dual SFP28 PCIe 3.0 x8 adapter | US IT Hardware

Product overview

The NVIDIA MCX4121A-ACUT is a 25 GbE dual-port SFP28 Ethernet adapter designed for PCI Express 3.0 x8 slots. As part of the ConnectX-4 Lx EN family, it offers two SFP28 interfaces to support 25 GbE connectivity in demanding network environments. The adapter is described as PCIe 3.0 x8 and UEFI enabled, making it suitable for platforms that require UEFI-based initialization and configuration. With its dual-port SFP28 design, the MCX4121A-ACUT can help consolidate network links and simplify cabling in dense server deployments. The card fits systems that can accommodate a PCIe 3.0 x8 network interface and need 25 GbE connectivity through SFP28 ports. This SKU, 900-9X4B0-0053-ST0, is targeted at IT environments standardizing on 25 GbE Ethernet and looking to integrate dual-port SFP28 adapters into their infrastructure.

25 GbE Ethernet connectivity for high-bandwidth workloads
Dual-port SFP28 design for flexible network topologies
PCIe 3.0 x8 interface for compatible server slots
UEFI enabled for modern firmware environments
ConnectX-4 Lx EN family adapter platform
NVIDIA branded enterprise network adapter

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Featuring

Manufacturer part #	900-9X4B0-0053-ST0
Brand	NVIDIA
Condition	New
Model	MCX4121A-ACUT
Host Bus	PCIe 3.0 x8
Technology	Ethernet
Bracket Type	Tall bracket
Product Line	ConnectX-4 Lx EN
Product Type	Network interface card
UEFI Enabled	Yes
Connection Technology	Wired

Compatible systems

NVIDIA ConnectX-4 Lx EN PCIe 3.0 x8 dual-port SFP28 25GbE network adapter with UEFI enabled.

NVIDIA ConnectX-4 Lx EN
Model: MCX4121A-ACUT
Form factor: PCIe add-in card
Compatible with PC systems; tall bracket version.

Best for

Data center servers
Suitable for data center servers requiring 25 GbE connectivity, leveraging the dual SFP28 ports and PCIe 3.0 x8 interface for high-bandwidth Ethernet links.
Virtualization hosts
Useful for virtualization hosts that need dual-port 25 GbE SFP28 networking on a PCIe 3.0 x8 adapter, allowing separation of traffic across two Ethernet ports.
Network upgrades
Applies to environments upgrading from lower-speed Ethernet to 25 GbE using dual-port SFP28 adapters in PCIe 3.0 x8 slots.
UEFI-based platforms
Appropriate for systems that rely on UEFI for adapter initialization, as the MCX4121A-ACUT is described as UEFI enabled.
Consolidated link deployments
Supports scenarios where dual 25 GbE SFP28 ports on a single PCIe 3.0 x8 card help consolidate multiple network links into fewer adapters.

Details

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Ports	2
Interface	PCIe 3.0 x8
Port Speed	25 Gigabit
Ethernet Speed	25 GbE
Port Interface	2 x SFP28
Network Interface	Dual-port SFP28
Management Feature	UEFI Enabled

NVIDIA 900-9X4B0-0053-ST0 25 GbE dual SFP28 PCIe 3.0 x8 adapter