Lenovo 4XF7A83645 Universal Short Rack Rail Kit

Overview

The Lenovo 4XF7A83645 is a universal short rack rail kit designed to mount compatible Lenovo ThinkSystem servers and appliances into standard 19-inch racks where depth is constrained. Short-depth rails are the right choice when installing into shallow two-post relay racks, wall-mount enclosures, or any cabinet where full-depth sliding rails cannot physically extend — situations common in wiring closets, edge deployments, and distributed equipment rooms. At 1 lb, the hardware footprint is minimal and does not meaningfully affect rack payload calculations.

Compatibility

The 4XF7A83645 is designed for the Lenovo ThinkSystem server family. The 'universal' designation indicates the rail geometry targets a range of ThinkSystem 1U and 2U form factors. Verify the specific server model's rack mounting guide before ordering — Lenovo publishes per-model rail compatibility tables that confirm whether short-depth versus full-depth rails are appropriate for your chassis and target rack post spacing. Do not assume compatibility across all ThinkSystem generations without checking the server's product guide.