Lenovo 4XH7A82905 SR650 V3 X16/X16 G4 RISER3 KIT

Lenovo 4XH7A82905 SR650 V3 X16/X16 G4 Riser 3 Expansion Kit

Overview

The Lenovo 4XH7A82905 is a PCIe Gen 4 Riser 3 kit designed for the ThinkSystem SR650 V3 rack server, providing two x16 PCIe Gen 4 slots in the third riser position. If your SR650 V3 deployment needs additional high-bandwidth expansion capacity — for GPU accelerators, high-throughput NIC cards, or storage HBAs — this riser kit extends the server's I/O architecture without requiring a chassis change. The x16/x16 lane configuration means both slots operate at full bandwidth simultaneously, which matters when installing cards that saturate a single x16 connection under sustained workloads.

Compatibility

Designed specifically for the Lenovo ThinkSystem SR650 V3 server platform. This kit targets the Riser 3 slot position within that chassis — it is not interchangeable with Riser 1 or Riser 2 assemblies, nor compatible with prior SR650 or SR650 V2 generations. Verify your SR650 V3 configuration supports a third riser assembly before ordering; not all base configurations include the physical bracket mounts and backplane connectors required for Riser 3 population. This part ships from Mexico (country of origin: MX) and carries UNSPSC code 43201404, classifying it within computer server component hardware.

Installation Notes

At 10 lb, the riser assembly is substantial — account for the weight when planning cable management and airflow inside the SR650 V3 chassis. Installation requires full server power-down and appropriate ESD precautions. Confirm the target SR650 V3 unit has the correct internal connector positions and that no conflicting riser or cable routing blocks Riser 3 installation. Consult the ThinkSystem SR650 V3 Maintenance Manual for slot population rules and any firmware prerequisites before seating expansion cards into the populated riser.