Lenovo 4XH7B03847 SR650 V4 4X2.5IN SAS Rear BP Option KIT

Lenovo 4XH7B03847 SR650 V4 4x2.5-in SAS Rear Backplane Option Kit

Overview

The Lenovo 4XH7B03847 is a rear-drive backplane option kit for the ThinkSystem SR650 V4 rack server, adding four 2.5-inch SAS hot-swap drive bays to the rear of the chassis. If your SR650 V4 deployment is running out of front-bay capacity — common in surveillance, AI inference, or dense storage builds — this kit extends total drive count without requiring a new chassis or external enclosure. Weighing 10 lb and manufactured in Mexico, the 4XH7B03847 is a factory-new hardware component shipped as a configurable option for qualified SR650 V4 configurations.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR650 V4 server platform. This backplane kit is a model-specific option — it is not cross-compatible with SR650 V2/V3, SR630, SR550, or other ThinkSystem rack servers. Verify your SR650 V4 chassis bay configuration and available rear drive cage slots before ordering; some base configurations may require additional cabling or a compatible SAS HBA/RAID controller to activate the rear bays. Drives are sold separately — the kit does not include 2.5-in SAS drives.

Installation Notes

The SAS interface requires a compatible onboard or add-in SAS/RAID controller already provisioned in the SR650 V4. Confirm controller port availability and cable routing clearance in the rear zone of the chassis before installation. Follow Lenovo's SR650 V4 hardware maintenance guide for backplane seating, SAS signal cable routing, and power connector torque requirements — rear bay kits in this class typically involve chassis disassembly and precise cable management to avoid airflow obstruction across the rear drive cage.