# NVIDIA Mellanox ConnectX-4 Lx EN MCX4121A-ACUT Network Interface Card, 25GbE, PCI Express

**URL:** https://aio.lv/en/product--nvidia-mcx4121a-acut--12573087
**Data updated:** 2026-07-09 14:51 (EEST)
**Category:** Other goods
**Manufacturer:** NVIDIA
**Manufacturer code:** MCX4121A-ACUT
**EAN:** 7290108481730
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 243.49 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 201.23 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--nvidia-mcx4121a-acut--12573087

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

The NVIDIA Mellanox ConnectX-4 Lx EN MCX4121A-ACUT is a high-performance internal network interface card designed for 25GbE connectivity. Utilizing a PCI Express host interface, this wired adapter ensures reliable data transmission for demanding server environments. It features a robust design optimized for high-bandwidth networking, making it an ideal solution for data centers and enterprise-grade computing infrastructures requiring efficient network throughput.

## Long description

The NVIDIA Mellanox ConnectX-4 Lx EN MCX4121A-ACUT is a high-performance network interface card engineered to meet the rigorous demands of modern data centers and enterprise computing environments. This internal adapter provides reliable 25GbE connectivity, ensuring high-speed data transmission and efficient network throughput for virtualized infrastructures and high-bandwidth applications.
Advantages
This network interface card offers exceptional scalability and efficiency by providing hardware-based I/O isolation. It is designed to handle intensive workloads, including data analytics, cloud computing, and database management, while maintaining sub-microsecond latency. By supporting advanced features like RDMA over Converged Ethernet and various stateless offload engines, it significantly reduces CPU overhead, thereby improving overall server utilization and productivity. Its flexible design supports multiple Ethernet speeds, allowing for seamless integration into diverse network architectures.
Suitable for
Data center infrastructure
Cloud computing platforms
High-performance database management
Virtualization environments
Big data analytics
This card may not be suitable for home office setups or standard desktop computers that lack the necessary PCIe 3.0 x8 slots or do not require high-bandwidth 25GbE connectivity. It is specifically optimized for server-grade hardware and professional enterprise networking equipment.
Key specifications
Interface: PCI Express 3.0 x8
Connectivity: Wired Ethernet
Data rates: Supports 1, 10, 25, 40, and 50 Gb/s
Form factor: Internal card with tall bracket
Advanced features: RDMA over Converged Ethernet, Overlay Network support, GPUDirect Technology
To use this network interface card, ensure your server has an available PCIe 3.0 x8 slot. Install the card physically into the slot and secure it with the provided tall bracket. After installation, connect the appropriate SFP28 cables to the ports. You must install the latest drivers provided by NVIDIA to ensure full compatibility with your operating system and to enable advanced features like RDMA and hardware offloading.
What to consider before purchase
Verify that your server motherboard supports PCIe 3.0 x8 slots.
Ensure your network infrastructure supports SFP28 connectivity.
Check for compatibility with your specific server operating system and virtualization software.
Confirm that your power supply and cooling system can accommodate high-performance server components.
Usage recommendations: For optimal performance, ensure that the server BIOS is updated to the latest version and that UEFI mode is enabled. Regularly monitor network traffic and update drivers to maintain system stability and security.

## Specifications

| Feature | Value |
|---|---|
| Interface | Ethernet |
| Internal | Yes |
| Ethernet LAN | Yes |
| Connectivity technology | Wired |
| Product colour | Silver, Green |
| Networking standards | IEEE 802.1Qaz, IEEE 802.3ba, IEEE 802.3az, IEEE 802.3ap, IEEE 802.3ae, IEEE 802.3ad, IEEE 802.1Qbg, IEEE 802.1Qbb, IEEE 802.1Q, IEEE 1588v2, IEEE 802.3by, IEEE 802.3cd |
| Host interface | PCI Express |
| Fiber ports quantity | 2 |
| Fiber optic connector | SFP28, SFP+, SFP |

## FAQ

### How much does the NVIDIA Mellanox ConnectX-4 Lx EN MCX4121A-ACUT Network Card cost, and is it available for purchase?

The price is 243.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 27.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can NVIDIA Mellanox ConnectX-4 Lx EN MCX4121A-ACUT Network Card be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All NVIDIA products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized NVIDIA service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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