Lenovo 4X97A85031 SR630 V3 PCIE GEN4 X16 Retimer Cable KIT

Lenovo 4X97A85031 SR630 V3 PCIe Gen4 x16 Retimer Cable Kit

Overview

The Lenovo 4X97A85031 is a PCIe Gen4 x16 retimer cable kit designed for the ThinkSystem SR630 V3 rack server platform. Retimer cables are required in high-density PCIe configurations where signal integrity degrades over longer trace paths — the retimer regenerates the Gen4 signal to maintain full x16 bandwidth to the target slot, which matters when you're provisioning GPU accelerators, high-throughput NVMe controllers, or 100GbE adapters that saturate a Gen4 x16 link. Without this kit, that PCIe slot may operate at reduced link width or speed, directly limiting throughput on attached devices. Sourced factory-new as a genuine Lenovo field upgrade component (UNSPSC 26121620, manufactured in Mexico).

Compatibility

Designed for the Lenovo ThinkSystem SR630 V3 (2U rack server). This kit is specific to the SR630 V3 chassis — it is not interchangeable with SR630 V2, SR650 V3, or other ThinkSystem server platforms. Verify your server's PCIe riser configuration and target slot assignment before ordering; Lenovo publishes slot-to-riser mapping in the SR630 V3 product guide. If you are expanding PCIe capacity across multiple SR630 V3 nodes, confirm each node's riser kit version matches this cable's retimer spec.

Installation Notes

PCIe retimer cables are internal server components — installation requires powering down the server, removing the top cover, and routing the cable between the system board retimer connector and the target PCIe riser. Follow Lenovo's SR630 V3 hardware maintenance guide for torque specs on riser screws and connector seating procedures. Improper seating on a Gen4 x16 connector can result in link negotiation falling back to Gen3 speeds, negating the purpose of the retimer. This component weighs 10 lb shipped — account for that in rack logistics when handling multiple units.