Lenovo 4XC7A62582 network card Internal Ethernet 25000 Mbit/s

The Lenovo 4XC7A62582 is an internal 25GbE SFP28 network adapter (ThinkSystem Mellanox ConnectX-6 Lx) designed for high-performance wired Ethernet connectivity. It connects via a PCI Express host interface and supports advanced offloads and networking features such as RoCE v2, NVMe over Ethernet and Open vSwitch, enabling low-latency, high-throughput links for data‑intensive environments. This guide-style overview summarizes the adapter's purpose, main capabilities and compatibility considerations for technical purchasers and IT professionals.

Advantages

The adapter provides 25Gb/s Ethernet throughput over SFP28, hardware acceleration for RDMA (RoCE v2) and storage over Ethernet (NVMe over Ethernet), and integration with virtual networking technologies like Open vSwitch. Its PCI Express host interface ensures direct, high-bandwidth connection to server platforms. The design targets reliability and performance in demanding network and virtualization deployments while supporting relevant IEEE networking standards.

Suitable for

• High-performance servers in data centres
• Virtualised environments using Open vSwitch
• Low-latency storage solutions leveraging NVMe over Ethernet or RoCE v2
• Network upgrades to 25GbE for enterprise and service provider networks

Key specifications

• Brand: Lenovo (ThinkSystem Mellanox ConnectX-6 Lx)
• MPN: 4XC7A62582
• EAN: 889488542628
• Maximum data transfer rate: 25000 Mbit/s (25Gb/s)
• Connector type: SFP28 (25GbE)
• Host interface: PCI Express
• Connectivity technology: Wired Ethernet
• Supported standards: IEEE 802.3ad, 802.3by, 802.3az, 802.3ap, 802.3ae, 802.1Qbg, 802.1Qbb, 802.1Qaz, 802.1Q

How to use

Install the card into an available PCIe slot following the server manufacturer's instructions and connect compatible SFP28 transceivers and cabling to the SFP28 port. Ensure the server BIOS and operating system have the required Mellanox/Lenovo drivers and firmware versions installed. Configure network settings, offload features (for example RoCE v2 or NVMe over Ethernet) and any required virtual switch (Open vSwitch) parameters via the OS and management tools. Verify link speed and error statistics after installation.

Recommendations

Use quality SFP28 transceivers and structured cabling certified for 25GbE, keep firmware and drivers up to date, and follow best practices for RDMA and NVMe over Ethernet deployment (adequate QoS, congestion control and host tuning) to achieve optimal performance and reliability.