# Network adapter card MELLANOX CONNECTX-6 LX EN 25GbE OCP3.0 dual-port SFP28 PCIe 4.0 x8 with host management (MCX631432AN-ADAB)

**URL:** https://aio.lv/en/product--mellanox-mcx631432an-adab--4604490
**Data updated:** 2026-02-12 14:11 (EET)
**Category:** Network Cards
**Manufacturer:** MELLANOX
**Manufacturer code:** MCX631432AN-ADAB
**EAN:** 7290108488517
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

This MELLANOX CONNECTX-6 LX EN network adapter provides 25GbE connectivity in an OCP3.0 form factor with dual SFP28 ports and PCIe 4.0 x8 interface. It includes host management capabilities and a bracket with thumb screw (pull tab). Designed for servers and data center deployments, it delivers high-throughput, low-latency links for virtualization, storage, and high-performance networking.

## Long description

The MELLANOX CONNECTX-6 LX EN 25GbE OCP3.0 dual-port SFP28 PCIe 4.0 x8 network adapter provides 25 Gigabit Ethernet connectivity in an OCP3.0 low-profile form factor. Equipped with two SFP28 ports and a PCI Express 4.0 x8 host interface, this card is built for server and data center environments that require reliable, high-throughput links. Integrated host management support enables remote monitoring and configuration to simplify deployment and operational tasks.
Advantages
This adapter delivers high bandwidth and low latency suitable for modern virtualization and storage networks. The OCP3.0 form factor and low-profile bracket with a thumb screw pull tab allow flexible mounting in compatible server designs. Dual SFP28 ports support a range of optical or DAC transceiver options for short- and long-reach links. PCIe 4.0 x8 interface ensures sufficient host bandwidth for multi-stream traffic and reduces bottlenecks in applications with heavy I/O. Built-in host management capabilities provide visibility into link status and allow remote configuration and firmware updates.
Suitable for
Server network upgrades in data centers and colocation facilities
Virtualized environments and hyperconverged infrastructure
Block and file storage networks (e.g., NVMe-oF, iSCSI)
High-performance computing clusters and distributed applications
Network function virtualization and edge compute nodes
Key specifications
Interface: PCI Express 4.0 x8 host interface
Network speed: 25 Gigabit Ethernet per port
Ports: Dual SFP28 ports supporting optical or DAC transceivers
Form factor: OCP3.0 low-profile adapter
Management: Integrated host management for remote monitoring and configuration
Latency: Low-latency architecture suitable for high-throughput workloads
Use case orientation: Designed for server and data center deployments
How to use
Install the adapter into a compatible PCIe 4.0 x8 or higher slot on the server motherboard following the server vendor’s hardware installation procedures. Secure the OCP3.0 bracket in the server chassis using the provided thumb screw pull tab if applicable. Insert compatible SFP28 transceivers or DAC cables into the SFP28 ports, then connect to the network switch or transceiver endpoints. Power on the server and verify that the host recognizes the adapter. Use the operating system’s network configuration tools and the adapter’s host management interface to assign IP settings, configure link speeds and features, and apply any recommended firmware updates.
Usage recommendations
For optimal performance, pair the adapter with SFP28 transceivers certified for 25GbE and ensure the server BIOS and OS drivers are updated to versions recommended by the server and adapter vendors. Use quality DACs or fiber cabling and ensure switch ports are configured for matching speeds and flow control settings to maintain low latency and stable throughput.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### 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 MELLANOX 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 MELLANOX 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