Safe checkout
Secure payments
Fast dispatch
1–2 day handling
Free shipping
U.S. ground
Warranty & RMA
Support after delivery
Mellanox MCX4121A-ACAT 2-Port 25Gbs SFP28 PCIE 3.0 Network Card
- Number of Ports: 2
- Port Speed: 25Gb/s
- Connector Type: SFP28
- Interface: PCIe 3.0 x8
- Technology: Ethernet
- Ideal for high-performance computing (HPC) and data centers
- Low latency and high throughput capabilities
- Supports advanced networking features
Was $84.35 · You save $12.35
Key specifications
See full specs ↓- Number of Ports
- 2
- Port Speed
- 25Gb/s
- Connector Type
- SFP28
- Interface
- PCIe 3.0 x8
- Manufacturer
- Mellanox
- Part Number
- MCX4121A-ACAT
Product details
This Mellanox MCX4121A-ACAT is a 2-Port 25Gb/s SFP28 PCIe 3.0 Network Interface Card. It is designed for high-performance networking in data centers and enterprise environments.
Technical Information
| Number of Ports | 2 |
| Port Speed | 25Gb/s |
| Connector Type | SFP28 |
| Interface | PCIe 3.0 x8 |
Additional Specifications
| Manufacturer | Mellanox |
| Part Number | MCX4121A-ACAT |
| Technology | Ethernet |
Description
The Mellanox MCX4121A-ACAT is a high-performance dual-port network adapter designed to meet the demanding bandwidth requirements of modern data centers and enterprise networks. Each of its two SFP28 ports supports speeds of up to 25Gb/s, providing substantial throughput for data-intensive applications, storage networking, and high-performance computing (HPC) clusters. Leveraging the PCIe 3.0 x8 interface, this network card ensures efficient communication with the host system, minimizing latency and maximizing data transfer rates. The SFP28 form factor allows for flexible deployment with various optical transceivers, enabling connectivity over different fiber types and distances. Mellanox is renowned for its advanced networking technologies, and this card likely incorporates features for enhanced performance and offloading. This adapter is an excellent choice for environments requiring high-speed, low-latency network connectivity, such as cloud infrastructure, big data analytics, and high-frequency trading platforms. Its dual-port design also offers redundancy and increased bandwidth aggregation capabilities, making it a versatile solution for critical network infrastructure.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
Buying 10+ units?
Get volume pricing and availability for MCX4121A-ACAT.




