Lenovo 4XF7A99131 Thinksystem Toolless Stab-in Slide Rail KIT V3 with 2U CMA

Lenovo 4XF7A99131 ThinkSystem Toolless Stab-In Slide Rail Kit V3 with 2U CMA

Overview

The Lenovo 4XF7A99131 is a toolless stab-in slide rail kit with an integrated 2U cable management arm (CMA), designed for clean, tool-free server rack installation. At 5 lb, this V3-generation rail kit handles the mechanical lift of rack mounting while the bundled CMA keeps power and data cabling organized behind the server — critical in high-density rack deployments where cable chaos slows maintenance and restricts airflow. The 4XF7A99131 targets data center and server room environments where repeated server pulls for service are routine and minimizing downtime matters.

Compatibility

Designed for Lenovo ThinkSystem V3 server platforms in a 2U rack form factor. The stab-in toolless mechanism is engineered to mate with standard EIA-310 square-hole and round-hole rack posts — confirm your rack post type against Lenovo's ThinkSystem V3 rail compatibility matrix before ordering, as rail generations are not always interchangeable across server chassis revisions. This kit is specific to V3-generation ThinkSystem chassis; V1 and V2 servers use different rail assemblies and are not compatible with the 4XF7A99131.

Installation Notes

Tool-free stab-in design means no screwdrivers or cage nuts are required for rail attachment to the rack — the locking tabs engage directly with rack post holes for a secure fit. The 2U CMA attaches at the rear of the chassis and requires adequate rear clearance behind the rack (minimum clearance varies by rack depth; verify against your rack's usable rear depth). Route cables through the CMA before finalizing the server position to avoid rebundling after installation. Sourced factory-new from the manufacturer supply chain — no grey-market, no parallel imports.