Lenovo 4M27A60836 ST650 V2 Full Length PCIE Holder KIT

Lenovo 4M27A60836 Full Length PCIe Card Holder Kit

Overview

The Lenovo 4M27A60836 is a mechanical retention kit designed to support full-length PCIe expansion cards installed in compatible Lenovo ThinkSystem server platforms. Full-length cards — including high-end GPUs, RAID controllers, and network adapters — generate significant mass and are vulnerable to connector stress and PCIe slot damage without proper mechanical support. This holder kit provides the structural retention that prevents card sag and connector wear over the operational life of the server, particularly in environments subject to vibration or frequent physical access. The 4M27A60836 is a genuine factory-new Lenovo component sourced through channel-direct distribution.

Compatibility

This kit is designed for the Lenovo ThinkSystem ST650 V2 tower server. It is specific to the ST650 V2 chassis — do not assume fitment with the ST650 (V1), ST550, ST558, or other ThinkSystem tower models, as PCIe cage geometry and retention rail dimensions differ between generations. Verify your chassis model before ordering. The kit accommodates full-length PCIe form factor cards across standard card widths; it is not intended for half-length or low-profile cards, which do not require supplemental retention in this chassis. If you are expanding a server-based NVR or storage node with a full-length capture or RAID card, this retention kit should be part of the installation BOM.

Installation Notes

Installation is performed with the server powered down and the chassis cover removed. The holder mounts to existing retention points within the ST650 V2 PCIe cage — no drilling or chassis modification is required. Seat the full-length card in its PCIe slot first, then position and secure the holder to the card's far edge. Consult the ST650 V2 Hardware Maintenance Guide for the correct torque and retention clip engagement procedure specific to your card thickness. The kit weighs 10 lb, which reflects the packaged assembly including any hardware.