Lenovo 4XH7B03845 SR650 V4 4X2.5INANYBAY Rear BP KIT

Lenovo 4XH7B03845 SR650 V4 4x2.5" Any-Bay Rear Drive Backplane Kit

Overview

The Lenovo 4XH7B03845 is a rear drive backplane expansion kit designed for the ThinkSystem SR650 V4 rack server. It adds four 2.5-inch any-bay drive bays to the rear of the chassis, giving you dedicated storage slots for boot, caching, or tiered-storage configurations without consuming front-bay capacity. If your SR650 V4 deployment is already running a full front-bay array and you need additional drives — NVMe boot mirrors, write-cache SSDs, or a secondary tier — this kit is how you add them without touching your primary storage layout.

Compatibility

This kit is designed specifically for the Lenovo ThinkSystem SR650 V4 server platform. It is not a universal fit — SR650 V3, SR650 (Gen 1/2), or other ThinkSystem models use different rear-bay kits with distinct backplane connectors and chassis mounting points. Verify your chassis generation before ordering. The any-bay designation means the four slots support both SAS/SATA and NVMe drive types, depending on how the backplane is cabled to the system board or PCIe riser — confirm your cabling and riser configuration supports the drive protocol you intend to install.

Installation Notes

The kit ships at 10 lb, which reflects the backplane assembly and associated hardware — factor this into rack weight budgets for dense SR650 V4 deployments. Installation requires access to the rear of the chassis and correct routing of backplane signal and power cables to the appropriate connectors on the SR650 V4 system board. Consult the SR650 V4 Hardware Maintenance Guide for cable routing diagrams and torque specs before installation. Country of origin is Mexico.