Lenovo 4XH7B03842 SR650/A V4 8X2.5IN Sas/sata BP KIT

Lenovo 4XH7B03842 SR650/A V4 8x2.5-Inch SAS/SATA Backplane Kit

Overview

The Lenovo 4XH7B03842 is a drive backplane kit for the ThinkSystem SR650 and SR650 V4 server platforms, enabling an 8-bay 2.5-inch SAS/SATA configuration. If you're expanding internal storage capacity on an SR650 V4 chassis — adding drives for surveillance footage retention, database storage, or general workload expansion — this backplane kit provides the physical and electrical interface layer between the server midplane and your 2.5-inch SAS or SATA drives. Supporting both SAS and SATA interfaces means you can mix SAS HDDs or SSDs with SATA drives in the same bay group, giving you flexibility to tier storage without reconfiguring the chassis. The kit ships at 10 lb and is manufactured in Mexico.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR650 and SR650 V4 (SR650A) rack servers. The 8x2.5-inch form factor targets the 2U rack server drive bay configuration for these models — verify your chassis bay count and existing backplane population before ordering, as the SR650 V4 supports multiple backplane configurations and not all bay positions accept this kit interchangeably. Supports 2.5-inch SFF SAS and SATA drives; not compatible with NVMe-only bays or LFF (3.5-inch) configurations. Confirm your RAID/HBA controller supports the SAS/SATA protocol expected for the drives you plan to install — pairing with an incompatible HBA leaves the backplane electrically present but drives undetected.

Installation Notes

Installation requires removing the SR650 top cover and routing SAS/SATA signal cables from the server's HBA or onboard controller to the backplane connectors. Power is drawn from the chassis backplane power connector — no separate power cable required in a properly configured SR650 chassis. Consult the SR650 V4 Hardware Maintenance Guide for bay mapping, cable routing diagrams, and torque specs on drive cage retention screws before beginning installation.