Lenovo 4C57A82403 ST650 V3 3.5IN NVME 4-BAY BP KIT

Lenovo 4C57A82403 ST650 V3 3.5-Inch NVMe 4-Bay Backplane Kit

Overview

The Lenovo 4C57A82403 is a 3.5-inch NVMe 4-bay backplane kit designed to expand direct-attached NVMe storage capacity in compatible Lenovo ThinkSystem servers. If you're configuring a server for high-throughput storage workloads — video surveillance recording, data-intensive applications, or dense archive builds — this backplane kit provides the physical and electrical infrastructure to add NVMe drives in a 3.5-inch form factor bay configuration. At 10 lb, this is a substantial assembly that includes the backplane and associated hardware for a rack-mounted installation scenario.

Compatibility

The 4C57A82403 is designed for the Lenovo ThinkSystem ST650 V3 tower server platform. This kit is specific to the ST650 V3 chassis — do not assume backward compatibility with ST650 V2 or other ThinkSystem tower models without verifying Lenovo's official compatibility matrix for your chassis revision and firmware level. If you are configuring a network video recorder or storage server build on the ST650 V3, confirm your drive bay configuration and backplane slot availability before ordering. NVMe interface ensures the drives connected through this backplane communicate via PCIe lanes rather than SATA or SAS, which means your controller and system board must support NVMe direct attachment in these bays.

Installation Notes

Installation requires access to the ST650 V3 internal chassis with the system powered down and grounded. The NVMe interface dictates that only NVMe-protocol 3.5-inch drives (or appropriately slotted U.2/carrier-adapted drives) are compatible — SATA or SAS drives will not function through this backplane. Verify the target bay position in the ST650 V3 service guide before seating the backplane to avoid misalignment with the midplane connectors. Country of origin is Mexico.