Lenovo 4M17A80522 ST250 3.5 Sata/sas 4-BAY BP KIT V2

Lenovo 4M17A80522 ST250 3.5" SAS/SATA 4-Bay Backplane Kit V2

Overview

The Lenovo 4M17A80522 is a factory-new 4-bay 3.5-inch drive backplane kit (V2) designed for the ThinkSystem ST250 tower server. It adds or replaces the internal SAS/SATA storage backplane, giving you up to four 3.5-inch drive slots that support both SAS and SATA interfaces — so you can mix enterprise SAS spindles with SATA SSDs or HDDs in the same bay configuration without an adapter. At 4.70 lb and 16.40 × 7.10 × 4.70 inches, the assembly is sized to fit the ST250 chassis without modification.

Compatibility

This kit is designed for the Lenovo ThinkSystem ST250 tower server platform. It supports 3.5-inch SAS and SATA drives, making it compatible with the broad range of Lenovo-certified HDDs and SSDs qualified for the ST250. Verify your ST250 sub-model and existing backplane configuration before ordering — the V2 designation indicates a revised assembly and may not be interchangeable with original V1 backplane kits in all chassis revisions.

Installation Notes

Installation requires access to the ST250 internal chassis with the system powered down and disconnected. The backplane connects to both the system board SAS/SATA signal connectors and the internal power distribution; confirm cable routing and connector positions match your chassis revision before installation. Consult the ThinkSystem ST250 hardware maintenance manual for torque specs on backplane retention screws and the correct drive cage removal sequence. No external tools beyond standard server-service screwdrivers are typically required, but anti-static precautions apply throughout.