Lenovo 4XF7A78617 ST50 V2 2.5 Drive BAY 2 Cage KIT

Lenovo 4XF7A78617 ST50 V2 2.5-Inch Drive Bay 2 Cage Kit

Overview

The 4XF7A78617 is a factory-new internal drive bay cage kit designed to expand 2.5-inch storage capacity within the Lenovo ThinkSystem ST50 V2 tower server. If your ST50 V2 shipped without a populated 2.5-inch bay configuration — or you're expanding an existing deployment to support additional SSDs or HDDs — this cage provides the mechanical mounting infrastructure to do it cleanly inside the chassis without improvised brackets or third-party adapters. At 0.35 lb and 9.60 x 5.90 x 2.10 in, it fits the ST50 V2's internal bay envelope precisely.

Compatibility

Designed specifically for the Lenovo ThinkSystem ST50 V2 tower server. The 4XF7A78617 is a platform-specific cage — do not attempt to fit it to ST50 Gen 1, ST250, ST550, or other ThinkSystem tower models, as chassis dimensions and backplane mounting points differ across generations. Verify your server's current bay configuration before ordering: this kit targets deployments where the 2.5-inch drive cage was not included at time of purchase or needs to be added for a storage expansion use case such as on-server NVR local retention or edge data buffering.

Installation Notes

Installation is an internal chassis operation — power down and disconnect the ST50 V2 before working inside the enclosure. The cage mounts to existing chassis guide rails and backplane connectors designed for this component; no drilling or modification is required when installed in the correct bay position. Confirm available bay slots in the ST50 V2 chassis before ordering — if all 2.5-inch positions are already occupied, this cage will not provide additional capacity without a supported drive configuration change at the system level. Lenovo's ST50 V2 technical reference guide details the exact bay-slot numbering and cable routing for this cage.