Lenovo 4C57A80519 SR860 V2 4U Riser C V2

Lenovo 4C57A80519 SR860 V2 4U Riser C V2

Overview

The 4C57A80519 is a PCIe riser card assembly designed specifically for the Lenovo ThinkSystem SR860 V2 4U rack server. This Riser C V2 module expands the server's PCIe slot capacity, enabling installation of additional expansion cards — GPUs, HBAs, NICs, or storage controllers — in configurations that the base server chassis cannot accommodate without it. If you are commissioning an SR860 V2 for a compute-dense or I/O-heavy workload and need to populate additional PCIe slots beyond the baseline configuration, this riser is the correct component. Weighing 2.00 lb, it is a direct factory-fit part with no field modification required.

Compatibility

The 4C57A80519 is designed exclusively for the Lenovo ThinkSystem SR860 V2 4U rack server. It is not interchangeable with riser assemblies from the SR860 V1 or other ThinkSystem platforms — form factor and connector layout are platform-specific. Verify the Riser C V2 slot position is unpopulated in your SR860 V2 before ordering. This part does not fit the SR850, SR950, or any 2U ThinkSystem chassis. If you are building out a rack server with high-density PCIe expansion, confirm your SR860 V2 configuration map against Lenovo's option compatibility matrix before deploying additional expansion cards.

Installation Notes

Installation follows standard Lenovo tool-less riser retention for the SR860 V2 chassis — the module seats into the designated Riser C slot and is secured via the integrated retention mechanism. Power down and disconnect the server from all power sources before installing. Confirm UEFI/firmware version on the SR860 V2 is current to ensure the riser slot is properly enumerated post-installation. No external power connector is required for the riser assembly itself; PCIe cards seated in the riser draw power through the riser's onboard connectors per standard PCIe slot power allocation.