Lenovo 4B27A09311 SR860 V2 2-CPU Socket 24 DIMM

Lenovo 4B27A09311 SR860 V2 2-CPU Socket 24-DIMM System Board

Overview

The Lenovo 4B27A09311 is a dual-CPU socket, 24-DIMM system board designed for the ThinkSystem SR860 V2 platform. If you are expanding or replacing the motherboard assembly in an SR860 V2 chassis, this is the board that supports a two-processor configuration — giving you the physical socket infrastructure and memory capacity needed for mid-scale enterprise compute workloads without migrating to a new chassis. With 24 DIMM slots across two populated CPU sockets, the board supports substantial memory configurations appropriate for memory-intensive virtualization, database, or analytics deployments running on the SR860 V2.

Compatibility

The 4B27A09311 is designed specifically for the Lenovo ThinkSystem SR860 V2 server platform. It is not interchangeable with the SR860 (original) or other ThinkSystem 4-socket platforms. Confirm your chassis generation before ordering — the V2 revision uses a different board layout and power delivery than the original SR860. This board is classified under UNSPSC 43211600 (Computer servers), consistent with a core server board assembly. Consult the server components compatibility matrix or your Lenovo service documentation to verify processor generation (Intel Xeon Scalable, 3rd Gen) and memory type (DDR4 RDIMM/LRDIMM) support before purchase.

Installation Notes

At 60 lb, this assembly requires two-person handling during installation — plan accordingly before scheduling a maintenance window. Board replacement in the SR860 V2 is a depot-level or on-site field service procedure; it is not a hot-swap component. Follow Lenovo's documented ESD procedures and torque specifications for retention hardware. Ensure firmware compatibility between the replacement board and existing XClarity provisioning configurations before final commissioning.