Lenovo ThinkSystem SR650 Fan Option Kit

The Lenovo 4F17A12349 is a fan option kit created to keep the Lenovo ThinkSystem SR650 server running at the right temperature. It offers purpose-built cooling that works with both first and second-generation processors, so teams can protect older deployments and new builds with the same kit.

Inside the SR650 chassis, the kit supports up to six hot-swap single-rotor fans. This design gives you N+1 redundancy, meaning the system keeps cooling even if one fan needs replacement. For administrators running virtual machines, large databases, or any workload that taxes the CPU and memory, that extra layer of protection helps avoid thermal throttling and unplanned downtime.

Installation is straightforward: slide the fans into the designated bays, connect power through the existing backplane, and the server’s management firmware recognizes the new cooling hardware automatically. No extra tools or firmware licenses are required, so you can finish the upgrade during a standard maintenance window.

Because the kit comes in black and silver, it blends with the SR650’s factory finish and keeps the rack looking orderly. Data centers, branch offices, and lab environments that rely on continuous uptime will appreciate the improved airflow and the peace of mind that comes with Lenovo-engineered parts.

• Compatible with ThinkSystem SR650
• Supports first- and second-generation processors
• Accommodates up to six hot-swap single-rotor fans
• Provides N+1 cooling redundancy
• Black and silver color scheme matches the server chassis