MELLANOX
MELLANOX MCX631102AC-ADAT CONNECTX-6 LX EN ADAPTER CARD, 25GBE, DUAL-PORT SFP28, PCIE 4.0 X8, CRYPTO AND S
Mfg Part Number: MCX631102AC-ADAT , Item #: 4330403
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Price: $555.96
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In Stock/Mfg Direct Ship
Last Updated: Nov 27, 2025
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25GbE Performance at the Speed of Lite
ConnectX-6 Lx SmartNICs deliver scalability, high-performance, advanced security capabilities and accelerated networking with the best total cost of ownership for 25GbE deployments in cloud, telco, and enterprise data centers.
Providing up to two ports of 25GbE or a single-port of 50GbE connectivity, and PCIe Gen 3.0/4.0 x8 host connectivity, ConnectX-6 Lx is a member of Mellanox's world-class, award-winning, ConnectX family of network adapters. Continuing Mellanox's consistent innovation in networking, ConnectX-6 Lx provides agility and efficiency at every scale. ConnectX-6 Lx delivers cutting edge 25GbE performance and security for uncompromising data centers.
Wide Selection of SmartNICs
ConnectX-6 Lx SmartNICs are available in several form factors including low-profile PCIe and OCP 3.0 cards with SFP28 connectors for 10/25GbE applications, or QSFP28 for 50GbE applications. Low-profile PCIe cards are available with tall and short brackets, while OCP3.0 cards are available with either a pull tab or an internal lock bracket.
Best-in-Class SDN Acceleration
Mellanox's ASAP - Accelerated Switch and Packet Processing® technology offloads the SDN data plane to the SmartNIC, accelerating performance and offloading the CPU in virtualized or containerized cloud data centers. Customers can accelerate their data centers with an SR-IOV or VirtIO interface while continuing to enjoy their SDN of choice.
ConnectX-6 Lx ASAP rich feature set accelerates public and on-premises enterprise clouds, and boosts communication service providers (CSP) transition to NFV. ASAP supports these communication service providers by enabling packet encapsulations, such as MPLS and GTP, along side cloud encapsulations, such as VXLAN, GENEVE and others.
Industry-leading RoCE
Following the Mellanox ConnectX tradition of industry-leading RoCE capabilities, ConnectX-6 Lx enables more scalable, resilient, and easy-to-deploy RoCE solutions - Zero Touch RoCE. ConnectX-6 Lx allows RoCE payloads to run seamlessly on existing networks without requiring network configuration (no PFC, no ECN) for simplified RoCE deployments. ConnectX-6 Lx ensures RoCE resiliency and efficiency at scale.
Secure Your Infrastructure
In an era where privacy of information is key and zero trust is the rule, ConnectX-6 Lx adapters offer a range of advanced built-in capabilities that bring infrastructure security down to every endpoint with unprecedented performance and scalability. ConnectX-6 Lx offers IPsec inline encryption/decryption acceleration. ASAP connection-tracking hardware offload accelerates L4 firewall performance.
ConnectX-6 Lx also delivers supply chain protection with hardware Root-of-Trust (RoT) for Secure Boot as well as Secure Firmware Update using RSA cryptography and cloning-protection, via a device-unique key, to guarantee firmware authenticity.
ConnectX-6 Lx SmartNICs deliver scalability, high-performance, advanced security capabilities and accelerated networking with the best total cost of ownership for 25GbE deployments in cloud, telco, and enterprise data centers.
Providing up to two ports of 25GbE or a single-port of 50GbE connectivity, and PCIe Gen 3.0/4.0 x8 host connectivity, ConnectX-6 Lx is a member of Mellanox's world-class, award-winning, ConnectX family of network adapters. Continuing Mellanox's consistent innovation in networking, ConnectX-6 Lx provides agility and efficiency at every scale. ConnectX-6 Lx delivers cutting edge 25GbE performance and security for uncompromising data centers.
Wide Selection of SmartNICs
ConnectX-6 Lx SmartNICs are available in several form factors including low-profile PCIe and OCP 3.0 cards with SFP28 connectors for 10/25GbE applications, or QSFP28 for 50GbE applications. Low-profile PCIe cards are available with tall and short brackets, while OCP3.0 cards are available with either a pull tab or an internal lock bracket.
Best-in-Class SDN Acceleration
Mellanox's ASAP - Accelerated Switch and Packet Processing® technology offloads the SDN data plane to the SmartNIC, accelerating performance and offloading the CPU in virtualized or containerized cloud data centers. Customers can accelerate their data centers with an SR-IOV or VirtIO interface while continuing to enjoy their SDN of choice.
ConnectX-6 Lx ASAP rich feature set accelerates public and on-premises enterprise clouds, and boosts communication service providers (CSP) transition to NFV. ASAP supports these communication service providers by enabling packet encapsulations, such as MPLS and GTP, along side cloud encapsulations, such as VXLAN, GENEVE and others.
Industry-leading RoCE
Following the Mellanox ConnectX tradition of industry-leading RoCE capabilities, ConnectX-6 Lx enables more scalable, resilient, and easy-to-deploy RoCE solutions - Zero Touch RoCE. ConnectX-6 Lx allows RoCE payloads to run seamlessly on existing networks without requiring network configuration (no PFC, no ECN) for simplified RoCE deployments. ConnectX-6 Lx ensures RoCE resiliency and efficiency at scale.
Secure Your Infrastructure
In an era where privacy of information is key and zero trust is the rule, ConnectX-6 Lx adapters offer a range of advanced built-in capabilities that bring infrastructure security down to every endpoint with unprecedented performance and scalability. ConnectX-6 Lx offers IPsec inline encryption/decryption acceleration. ASAP connection-tracking hardware offload accelerates L4 firewall performance.
ConnectX-6 Lx also delivers supply chain protection with hardware Root-of-Trust (RoT) for Secure Boot as well as Secure Firmware Update using RSA cryptography and cloning-protection, via a device-unique key, to guarantee firmware authenticity.
Main Specification
| General Information | |
| Manufacturer | NVIDIA Corporation |
| Manufacturer Part Number | MCX631102AC-ADAT |
| Manufacturer Website Address | http://www.nvidia.com |
| Brand Name | NVIDIA |
| Product Line | ConnectX-6 Lx |
| Product Name | ConnectX-6 Lx Ethernet SmartNIC |
| Product Type | 25Gigabit Ethernet Card |
| Interfaces/Ports | |
| Host Interface | PCI Express 4.0 x8 |
| Total Number of Ports | 2 |
| I/O Expansions | |
| Expansion Slot Type | SFP28 |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Network & Communication | |
| Network Technology | 25GBase-X |
| Physical Characteristics | |
| Form Factor | Plug-in Card |
| Width | 3.8" |
| Depth | 2.7" |
| Miscellaneous | |
| Device Supported | Server |
| Environmentally Friendly | Yes |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS) |
| Warranty | |
| Limited Warranty | 1 Year |
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