Lenovo 4XC7A87752 Thinksystem NVIDIA BLUEFIELD-3 B3220 VPI QSFP112 2P 200G PCIE GEN5 X16 Adapter

Lenovo 4XC7A87752 BlueField-3 B3220 Dual-Port 200G PCIe Gen5 DPU Adapter

Overview

The Lenovo 4XC7A87752 is a ThinkSystem-branded NVIDIA BlueField-3 B3220 VPI adapter delivering two QSFP112 ports at 200Gb/s each over a PCIe Gen5 x16 host interface. This class of data processing unit (DPU) offloads network, storage, and security functions from the host CPU — freeing server cores for application workloads in compute-dense data center environments. The PCIe Gen5 x16 bus provides the bandwidth headroom that 200G line-rate traffic demands; pairing this adapter with a slower-generation slot will cap throughput and negate the upgrade rationale. The VPI (Virtual Protocol Interconnect) architecture supports both InfiniBand and Ethernet fabrics, giving architects flexibility to run RoCE v2, traditional Ethernet, or HDR/NDR InfiniBand without swapping hardware. At 1.00 lb and manufactured in Mexico, the 4XC7A87752 ships factory-new and is sourced through Lenovo's commercial channel.

Compatibility

Designed for Lenovo ThinkSystem server platforms with a PCIe Gen5 x16 full-height slot — primarily current-generation ThinkSystem SR and ST series rack and tower servers that ship with Gen5 PCIe risers. Confirm your specific ThinkSystem model's riser configuration and available slot count before ordering; some 1U chassis constrain full-height card clearance. The QSFP112 port format requires QSFP112 or QSFP-DD cables and transceivers — existing QSFP28 (100G) infrastructure is not directly compatible at 200G line rate. For fabric connectivity, pair with a 200G-capable top-of-rack switch supporting QSFP112 or breakout to 4x50G ports depending on your spine architecture. This adapter falls under UNSPSC code 43211600 (network interface cards/adapters) and integrates with standard Lenovo XClarity provisioning workflows on supported ThinkSystem hosts.

Installation Notes

Install into a PCIe Gen5 x16 mechanical slot — electrically x8 slots will reduce available bandwidth and are not recommended for 200G sustained workloads. Ensure adequate chassis airflow across the adapter; 200G DPUs generate meaningful heat at sustained line rate. Firmware updates should be applied via Lenovo XClarity Administrator or the NVIDIA DOCA software stack prior to production commissioning. Driver and DOCA version compatibility with your host OS should be verified against Lenovo's ServerProven matrix for the target ThinkSystem platform before deployment.