Lenovo 4XC7B02131 Thinksystem NVIDIA BLUEFIELD-2 25GBE SFP56 2-PORT PCIE Ethernet DPU W/bmc & Cryp

Lenovo 4XC7B02131 ThinkSystem NVIDIA BlueField-2 25GbE SFP56 2-Port PCIe DPU

Overview

The Lenovo 4XC7B02131 is a ThinkSystem-qualified NVIDIA BlueField-2 Data Processing Unit (DPU) designed for server deployments where network offload, security acceleration, and infrastructure isolation matter. Based on the product designation, it delivers dual 25GbE SFP56 connectivity over a PCIe host interface and integrates a Baseboard Management Controller (BMC) alongside on-card cryptographic acceleration — positioning it as an infrastructure card rather than a simple NIC. It is sourced from manufacturing in Mexico and carries UNSPSC code 43201404, consistent with network interface card classification.

Because detailed manufacturer specification sheets were not available at the time of publication, the feature descriptions below are derived from the product name and distributor-supplied structured attributes. Buyers requiring confirmed throughput figures, PCIe generation, power envelope, or OS/hypervisor compatibility should consult the Lenovo ThinkSystem option compatibility matrix or a pre-sales engineering contact before ordering.

Key Features

• Dual 25GbE SFP56 Ports: Two 25GbE ports give you aggregate bandwidth headroom for storage, management, and data-plane traffic without splitting across multiple cards — consolidating connections and reducing PCIe slot consumption in dense server builds.
• PCIe Host Interface: The PCIe interface integrates directly into the server's fabric, keeping latency low between the DPU's offload engine and host CPU — important in latency-sensitive workloads like distributed storage or real-time telemetry pipelines.
• Integrated BMC: An on-card BMC provides out-of-band management capability independent of the host OS — useful in environments where the DPU handles network functions and you need a separate management plane that survives host crashes or reboots.
• On-Card Cryptographic Acceleration: Hardware crypto offload moves encryption and decryption workloads off the host CPU, freeing compute resources for application workloads — particularly relevant in storage encryption, IPsec tunnel termination, or secure overlay network scenarios.
• ThinkSystem Compatibility: Factory-qualified as a Lenovo ThinkSystem option, which means it is validated against ThinkSystem server firmware and management tooling — reducing integration risk compared to generic third-party adapters in a managed Lenovo server environment.

Integration and Compatibility

The 4XC7B02131 carries interface designations of PCIe, Ethernet, and SFP — confirming physical compatibility with SFP56 transceivers at the port side and a PCIe slot at the host side. Buyers should verify PCIe generation (Gen 3 vs. Gen 4) and slot width (x8 vs. x16) against their target server model before procurement. SFP56 transceivers are required and are not confirmed to be included; confirm separately. OS and hypervisor support (VMware ESXi, Red Hat, Windows Server) should be validated against the Lenovo ServerProven or NVIDIA BlueField-2 software support matrix. This card is suited for network infrastructure deployments within ThinkSystem server environments where DPU-based offload is part of the architecture.

Frequently Asked Questions

Q: What interfaces does the Lenovo 4XC7B02131 use?

A: The 4XC7B02131 uses PCIe for the host interface and SFP56 connectors for the two 25GbE network ports, per distributor-supplied structured data.

Q: Does the 4XC7B02131 include transceivers?

A: No transceiver inclusion is confirmed in the available evidence. Buyers should verify whether SFP56 transceivers are bundled or must be sourced separately before ordering.

Q: Is the Lenovo 4XC7B02131 compatible with all ThinkSystem servers?

A: The card is designated as a ThinkSystem option, but specific server model compatibility should be confirmed against the Lenovo ServerProven compatibility matrix, as PCIe slot availability and firmware support vary by server model.

Q: What is the weight of the 4XC7B02131?

A: The 4XC7B02131 has a listed weight of 10.00 lb, which likely reflects shipping/packaging weight rather than the bare card weight.

Q: Where is the Lenovo 4XC7B02131 manufactured?

A: The country of origin is Mexico, per distributor-supplied structured attributes.

James Everett

The 4XC7B02131 sits in a product class that many infrastructure teams are still figuring out how to deploy effectively. A BlueField-2-class DPU with dual 25GbE SFP56 and an integrated BMC is not a NIC replacement — it is a programmable offload engine that shifts networking, storage, and security functions off the host CPU entirely. The use case has to justify the architecture before you commit to this card.

Technical Highlights:

• Dual 25GbE SFP56: Two ports at 25GbE per port give you 50Gbps aggregate — enough to handle converged storage and data traffic on a single card without saturating a single-port 25GbE NIC under mixed workloads.
• Integrated BMC: Out-of-band management from the card itself means the DPU's management plane is decoupled from the host — a meaningful operational benefit if the host OS is compromised or needs to be reimaged without losing network management access.
• On-Card Crypto Offload: Hardware-accelerated cryptography removes IPsec, TLS, or storage encryption overhead from the host CPU — in environments running encrypted overlays at scale, that CPU headroom translates directly to application density.

Deployment Considerations:

• PCIe slot compatibility and generation (Gen 3 vs. Gen 4) must be confirmed against the specific ThinkSystem server chassis before ordering — slot width and bifurcation support vary by platform.
• Available evidence does not confirm SFP56 transceiver inclusion, OS/hypervisor software support versions, or maximum power draw — all three should be resolved with the Lenovo ServerProven matrix before procurement in a production environment.

This card is a fit for ThinkSystem server deployments running software-defined networking, encrypted storage overlays, or zero-trust network architectures where DPU-based infrastructure isolation is a design requirement — not a general-purpose NIC upgrade.