Lenovo 4XH7B03844 SR650 V4 4X2.5IN SAS MID BP Option KIT

Lenovo 4XH7B03844 SR650 V4 4x2.5-Inch SAS Mid Backplane Option Kit

Overview

The Lenovo 4XH7B03844 is a mid backplane option kit that adds a 4x 2.5-inch SAS drive bay assembly to qualifying ThinkSystem SR650 V4 rack servers. If your SR650 V4 was initially provisioned without this bay configuration — or you're expanding storage capacity after initial deployment — this kit provides the mechanical and signal infrastructure to support additional 2.5-inch SAS drives in the mid-chassis position. The SAS interface means it integrates directly into existing SAS storage controllers without requiring additional HBA changes in most configurations.

Compatibility

Designed for the Lenovo ThinkSystem SR650 V4 server platform. This kit is specific to the SR650 V4 chassis variant that supports mid-backplane expansion in the 4x 2.5-inch SAS configuration. It is not a universal Lenovo backplane — confirm your SR650 V4 chassis variant and current backplane layout before ordering. Compatibility with SR650 (non-V4) or other ThinkSystem series (SR630, SR850, etc.) is not supported by available evidence and should be verified with Lenovo documentation prior to purchase.

Installation Notes

Ships at 10 lb, which reflects the assembled kit weight including backplane board, cabling, and any required brackets. Installation requires access to the mid-chassis bay and coordination with existing drive and cable routing inside the SR650 V4 enclosure. As with all SAS backplane work, power down and discharge the server fully before accessing internal components. Confirm the SAS signal cables included (or required separately) match your controller's port count before beginning installation.