Lenovo 4C57A88888 SR250 V3 X16 PCIE G5 Riser

Lenovo 4C57A88888 SR250 V3 PCIe Gen5 x16 Riser

Overview

The Lenovo 4C57A88888 is a PCIe Gen 5 x16 riser card designed for the ThinkSystem SR250 V3 rack server. It extends the server's PCIe slot availability so you can install full-height, full-length expansion cards — GPUs, HBAs, network adapters, or capture/encode cards — in a 1U form factor that would otherwise have no room for them. If you're deploying SR250 V3 units as edge compute nodes, NVR hosts, or lightweight AI inference servers and need an additional PCIe device beyond the motherboard's native slots, the 4C57A88888 is the mechanical and electrical bridge that makes that configuration possible.

Compatibility

This riser is engineered specifically for the Lenovo ThinkSystem SR250 V3 platform. It is not a universal riser — do not attempt to fit it in SR250 V2 or other SR-series chassis without verifying the mechanical and backplane connector match. If you're building out a network video recorder rack or an edge server stack and the SR250 V3 is your chosen platform, this riser is the correct part for adding a PCIe Gen5 x16 card. Confirm your SR250 V3 configuration supports a secondary riser position before ordering — some base configurations ship with this slot occupied or blocked by airflow baffles.

Installation Notes

The riser seats into the dedicated riser slot on the SR250 V3 system board. PCIe Gen5 connectors are keyed and require firm, even seating — partial insertion will prevent POST. At 10 lb, this assembly is heavier than a bare riser card; the weight reflects the included cage hardware. Follow Lenovo's ESD protocols: ground yourself before handling and avoid contact with the edge connector fingers. No special tools are required beyond standard server screwdrivers, but consult the SR250 V3 Hardware Maintenance Guide for slot assignment and airflow baffle repositioning before installing a high-TDP expansion card.