0 ratings
Item #:
15495163
Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT)
Item #:
15495163
GBP 87
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Thursday, August 20
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
ConnectX-4 Lx EN improves network performance by increasing available bandwidth while decreasing associated transport load on the CPU. It also introduces multi-host technology, which reduces CAPEX and OPEX costs without compromising on network performance.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Performance
Delivers exceptional throughput with up to 25 Gbps connectivity, ensuring rapid data transfer for demanding applications and workloads.
Versatile Connectivity
Supports Ethernet, enabling seamless integration into diverse network environments, making it ideal for both data centers and enterprise networks.
Low Latency
Provides minimal delay in data transmission, enhancing real-time communication and improving application responsiveness in critical environments.
Product Details
| Brand | Mellanox |
| Unit Count | 1 Count |
| Global Trade Identification Number | 07290107197861 |
| Manufacturer | INGB9 Music Vendor Code |
| Built-In Media | Mellanox network adapter |
| Item Type Name | ConnectX-4 Lx EN Network Adapter |
| Model Number | MCX4121A-ACAT |
| Mfr Part Number | MCX4121A-ACAT |
| Hardware Interface | PCIE x 8 |
| Compatible Devices | Desktop |
| Data Link Protocol | Ethernet |
| Data Transfer Rate | 25600 megabits_per_second |
| Color | Assorted |
| Item Weight | 2.88 ounces (81.65 grams) |
Who Should Buy?
-
Data Center Operators
Ideal for high-speed network operations, enhancing data throughput with reduced latency in data center environments.
-
Cloud Service Providers
Supports multiple VMs efficiently, making it perfect for companies offering cloud services with high-performance network requirements.
-
High-Performance Computing
Well-suited for HPC applications needing fast data transfers, enabling effective performance in scientific computing.
-
Home Users
Typical home users do not require advanced features or high-speed capabilities; simpler solutions are more cost-effective.
Product Description
Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT)
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the Mellanox ConnectX-4 Lx EN Network Adapter MCX4121A-ACAT?
Answer: The Mellanox ConnectX-4 Lx EN Network Adapter MCX4121A-ACAT is a high-performance network interface card designed for data centers and enterprise applications. It supports 10/25 GbE Ethernet connectivity and provides low latency and high throughput, essential for demanding workloads. This adapter is equipped with offloading capabilities, helping to reduce CPU usage while handling data-intensive tasks like virtualization, cloud computing, and storage networking. -
Question:
What are the key features of the ConnectX-4 Lx EN Network Adapter?
Answer: Key features of the Mellanox ConnectX-4 Lx EN Network Adapter include support for both 10 GbE and 25 GbE connections, Virtual Station Multiqueue (VSMQ), and advanced security protocols. It offers features such as RDMA over Converged Ethernet (RoCE), which enables high bandwidth and low-latency performance essential for applications like high-performance computing and big data analytics. These functionalities make it ideal for modern data center infrastructures. -
Question:
How does the ConnectX-4 Lx EN Adapter improve network performance?
Answer: The ConnectX-4 Lx EN Adapter enhances network performance through its advanced offloading capabilities, which take processing load off the CPU. This allows for smoother data processing and more efficient resource utilization in environments requiring high bandwidth and low latency. It's especially beneficial in scenarios involving virtualization or large data transfers where performance and responsiveness are critical. -
Question:
Is the Mellanox ConnectX-4 Lx EN Network Adapter compatible with all operating systems?
Answer: Yes, the Mellanox ConnectX-4 Lx EN Network Adapter is compatible with a variety of operating systems, including Windows, Linux, and VMware. This flexibility allows users to implement the adapter in diverse environments across various hardware configurations. Users can integrate it easily into existing infrastructures, whether they are running cloud services, virtualization platforms, or high-performance applications. -
Question:
Can the ConnectX-4 Lx EN Adapter be used for gaming purposes?
Answer: While the Mellanox ConnectX-4 Lx EN Adapter is designed primarily for enterprise and data center applications, it can be utilized in gaming environments that require high-speed internet connections and low latency. Gamers with substantial multitasking needs or those who stream their gameplay may benefit from the performance enhancement that this adapter provides, ensuring a seamless online gaming experience. -
Question:
What performance improvements can I expect with the ConnectX-4 Lx EN Adapter?
Answer: Users can expect significant performance improvements such as reduced network latency, increased data throughput, and enhanced scalability when using the ConnectX-4 Lx EN Adapter. It efficiently handles network traffic in high-density environments, making it an excellent choice for applications like data analytics and cloud computing, where large volumes of data are processed and transferred frequently. -
Question:
How does the ConnectX-4 Lx EN Adapter support virtualization?
Answer: The Mellanox ConnectX-4 Lx EN Adapter facilitates virtualization through features like Virtual Function (VF) support and SR-IOV. These features allow multiple virtual machines to share the network adapter while ensuring isolation and performance for each VM. This is crucial in cloud environments, where maximizing resource utilization is essential for operational efficiency and service delivery. -
Question:
What types of environments is the ConnectX-4 Lx EN Adapter suitable for?
Answer: The Mellanox ConnectX-4 Lx EN Adapter is suitable for various environments, including cloud data centers, enterprise networks, and high-performance computing (HPC) setups. Its versatility allows it to cater to organizations managing large databases, engaging in intensive data analytics, or those relying on virtualization and multi-tenant cloud services, ensuring robust performance under demanding workloads. -
Question:
What are the power consumption specifications of the ConnectX-4 Lx EN Adapter?
Answer: The ConnectX-4 Lx EN Adapter is designed to operate efficiently with low power consumption while maintaining high performance. It supports energy-efficient modes that help in reducing overall power usage without sacrificing throughput. This efficiency makes it ideal for organizations prioritizing energy savings in their data center operations while still requiring robust networking capabilities. -
Question:
Where can I buy the Mellanox ConnectX-4 Lx EN Network Adapter MCX4121A-ACAT?
Answer: You can buy the Mellanox ConnectX-4 Lx EN Network Adapter MCX4121A-ACAT from Ubuy in Guernsey. Ubuy offers a seamless shopping experience, allowing you to explore additional features, specifications, and customer reviews to make an informed choice. Their platform ensures that you have access to quality products alongside efficient customer service.
Mellanox Network Cards MCX4121A-ACAT Editorial Review
The Mellanox ConnectX-4 Lx EN Network Adapter (MCX4121A-ACAT) is a reliable and inexpensive 2x 10/25 card for server needs. It uses SFP28 adapter and supports both copper SFP28 DAC cable and fiber cable with transceiver. The card ships with both tall bracket and short bracket. The card has proven to work reliably in a 24/7 environment and has been detected without any issues by RHEL 7 system drivers. The 10G performance has been found to be about 10% faster than equivalent Intel card and 25G performance was even better. This is the go-to card for users looking for an affordable and high-performing network adapter.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Inexpensive
- Reliable
- Supports both copper SFP28 DAC cable and fiber cable with transceiver
- Ships with both tall bracket and short bracket
- 10G performance has been found to be about 10% faster than equivalent Intel card and 25G performance was even better.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
GBP 87
Order now and get it around Thursday, August 20
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Significant throughput and latency improvements.
- Increases available bandwidth while decreasing transport load on the CPU.
- Introduces multi-host technology for maximum CAPEX and OPEX savings.
- Smart interconnect for various compute and storage platforms.
- Industry-leading performance for web access and storage.
- Cutting-edge virtualized overlay network performance.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.