Mellanox Technologies MCX4121A-ACUT network card Internal Ethernet
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MCX4121A-ACUT
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MCX4121A-ACUT Overview
MELLANOX MCX4121A-ACUT Connectx-4 Lx En Network Interface Card 25gbe Dual-port Sfp28 Pcie3.0 X8 Uefi Enabled. Main Specifications Device Type Network Adapter Form Factor Plug-in Card Interface (bus) Type Pci Express 3.0 X8 Pci Specification Revision Pcie 1.1, Pcie 2.0, Pcie 3.0 Ports 25 Gigabit Sfp28 X 2 Dimensions (wxdxh) 5.6 In X 2.7 In Data Link Protocol 25 Gigabit Lan Data Transfer Rate 25 Gbps Network / Transport Protocol Tcp/ip, Udp/ip, Iscsi, Udapl Remote Management Protocol Rmon 2, Rmon Features Mpls Support, Pxe Support, Large Send Offload (lso), Large Receive Offload (lro), Receive Side Scaling (rss), Uefi Support, Single Root I/o Virtualization (sr-iov), Energy Efficient Ethernet, Checksum Offload Support, Transmit Side Scaling (tss), Rdma Over Converged Ethernet (roce), Priority-based Flow Control (pfc), Network Controller Sideband Interface (nc-si), Virtual Extensible Lan (vxlan), Network Virtualization Using Generic Routing Encapsulation (nvgre), Extended Reliable Connected Transport (xrc), Dynamically Connected Transport (dct), User Mode Registration And Remapping Of Memory (umr), On Demand Paging (odp), Network Partitioning (npar), Raid Offload, Iscsi Extensions Over Rdma (iser), Interrupt Coalescing, Peerdirect Rdma, 64/66 Encoding, Enhanced Transmission Selection (ets), Geneve Support Compliant Standards Ieee 802.1q, Ieee 802.1p, Ieee 802.3ad (lacp), Ieee 802.3ap, Ieee 802.3az, Ieee 802.1ax, Ieee 802.1qbb, Ieee 802.1qaz, Ieee 1149.1, Ieee 802.1qbg, Ieee 1588v2, Ieee 1149.6
ConnectX-4 Lx EN Network Interface Card 25GbE dual-port SFP28 PCIe3.0 x8 UEFI Enabled Tall Bracket
- Wired
- PCI Express Ethernet
- Internal
Summary Description
Mellanox Technologies MCX4121A-ACUT. Internal. Connectivity technology: Wired, Host interface: PCI Express, Interface: Ethernet. Product colour: Green, Silver
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Specifications
Overview
| Condition | New |
|---|---|
| Brand | Mellanox Technologies |
| Stock | In Stock |
Ports & interfaces
| Connectivity technology | Wired |
|---|---|
| Host interface | PCI Express |
| Interface | Ethernet |
| Fiber ports quantity | 2 |
| Fiber optic connector | SFP, SFP+, SFP28 |
Network
| Networking standards | IEEE 802.3cd, IEEE 802.3by, IEEE 1588v2, IEEE 802.1Q, IEEE 802.1Qaz, IEEE 802.1Qbb, IEEE 802.1Qbg, IEEE 802.3ad, IEEE 802.3ae, IEEE 802.3ap, IEEE 802.3az, IEEE 802.3ba |
|---|---|
| Ethernet LAN | Yes |
Design
| Product colour | Green, Silver |
|---|---|
| Internal | Yes |
Resources
Documents
Frequently Asked Questions (FAQs)
What are the primary performance specifications of the Mellanox ConnectX-4 Lx MCX4121A-ACUT NIC? +
The MCX4121A-ACUT is a high-performance 25GbE network interface card featuring dual SFP28 ports. It is designed to deliver industry-leading throughput and low latency, making it an ideal solution for cloud-native, Web 2.0, enterprise data centers, and high-performance computing environments that require efficient I/O consolidation and high bandwidth.
Does the MCX4121A-ACUT support both 25GbE and 10GbE connectivity? +
Yes, this adapter is highly versatile and supports multi-rate connectivity. It allows administrators to deploy the card in 25GbE environments while maintaining backward compatibility with 10GbE infrastructures. This flexibility is particularly useful for organizations currently transitioning their data center backbone to higher speeds without requiring an immediate, complete hardware overhaul across every connected server node.
What is the form factor and interface of the MCX4121A-ACUT? +
This model is a standard low-profile PCIe card designed for integration into dense server environments. It utilizes a PCIe 3.0 x8 interface, ensuring sufficient bus bandwidth to support its dual-port 25GbE capacity. Its compact design allows it to fit efficiently into various 1U and 2U rack-mount chassis, optimizing internal airflow while maintaining robust connectivity performance.
How does the Mellanox ConnectX-4 Lx architecture improve data center efficiency? +
The architecture utilizes advanced hardware offloading capabilities, including RDMA over Converged Ethernet (RoCE), which significantly reduces CPU overhead. By offloading networking tasks from the server processor to the NIC, this card enables higher application performance and better server utilization, ultimately lowering total cost of ownership for high-density virtualization and storage-intensive deployments.
Which operating systems and virtualization platforms are compatible with this NIC? +
The MCX4121A-ACUT features extensive driver support across major enterprise operating systems, including various Linux distributions, Windows Server editions, and major virtualization hypervisors. This broad compatibility ensures seamless integration into heterogeneous data center environments, allowing for simplified management and consistent network performance across diverse software-defined infrastructure stacks.
Is the MCX4121A-ACUT suitable for high-frequency trading or ultra-low latency applications? +
With its sophisticated hardware acceleration and optimized data path, this card is well-suited for latency-sensitive applications. By minimizing packet processing delays and utilizing kernel bypass technologies, it provides the consistent, deterministic performance required for demanding tasks such as financial trading systems, real-time data analytics, and high-performance messaging clusters.
What management features are available for monitoring this NIC in a cluster? +
Administrators can manage the card through standard interface tools provided by Mellanox, facilitating effective monitoring and diagnostic oversight. It supports standard Ethernet management protocols, ensuring that the network interface can be seamlessly integrated into existing infrastructure monitoring frameworks, which helps in tracking link status, throughput metrics, and interface health across large-scale server clusters.
Can I use direct attach copper (DAC) cables with the MCX4121A-ACUT? +
This card features SFP28 ports, which are natively designed to support various cabling options including Direct Attach Copper (DAC) cables and optical transceivers. Using DAC cables is an excellent, cost-effective choice for short-reach rack-level connectivity between the server and the Top-of-Rack switch, ensuring reliable data transmission with minimal signal loss.
How can I obtain a competitive bulk quote for multiple MCX4121A-ACUT units? +
If you are planning an enterprise deployment and require a high volume of Mellanox NICs, we are prepared to assist with tailored pricing. Please contact our dedicated sales team directly through BuyRouterSwitch.com to discuss your specific project requirements, and we will provide a comprehensive quote that reflects your scale and procurement needs.
Why should I choose BuyRouterSwitch.com for my Mellanox hardware procurement? +
BuyRouterSwitch.com serves as a premier source for authentic enterprise-grade networking components. We specialize in streamlining the supply chain for IT departments by providing verified hardware and professional service. By choosing us for your infrastructure components, you benefit from our streamlined ordering processes and deep expertise in networking hardware, ensuring your data center receives the exact equipment needed for seamless operations.
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