Lenovo 4XC7A69404 SR670 V2 Rear 2 X16 Riser

Lenovo 4XC7A69404 SR670 V2 Rear Dual x16 PCIe Riser

Overview

The Lenovo 4XC7A69404 is a rear riser card for the ThinkSystem SR670 V2, providing two PCIe x16 slots at the back of the chassis. In GPU-dense or high-I/O deployments — AI inference nodes, video analytics servers, or multi-accelerator compute racks — the rear riser position frees up the front riser bays for additional expansion cards, letting you maximize the SR670 V2's slot count without compromising airflow paths designed around the factory riser layout. UNSPSC code 43211600 classifies this as a server option/component.

Compatibility

The 4XC7A69404 is designed specifically for the Lenovo ThinkSystem SR670 V2 server platform. It is not interchangeable with the SR670 (Gen 1) rear risers — the SR670 V2 uses a revised chassis backplane and riser connector geometry. Confirm your chassis generation before ordering: the SR670 V2 model identifier appears on the front bezel and the system label on the rear. This riser is not compatible with SR650, SR630, or other ThinkSystem server options outside the SR670 V2 family. If you are configuring a multi-GPU node requiring front and rear expansion simultaneously, pair this with the appropriate front riser option from the SR670 V2 server components catalog to avoid slot conflicts.

Installation Notes

Installation follows Lenovo's standard tool-based riser swap procedure for the SR670 V2: power down, discharge static, remove the top cover, and seat the riser into the rear riser connector until the locking tab engages. GPU or PCIe cards installed in this riser add to the system's total thermal load — verify that your power supply and cooling configuration meet the combined TDP of all installed accelerators before commissioning. Consult the SR670 V2 Hardware Maintenance Guide for slot priority rules, as certain riser configurations require specific processor population to activate all PCIe lanes.