5B21C40338 - Lenovo Laptop CPU - Genuine

This Lenovo Laptop CPU (5B21C40338) is a genuine part manufactured by Lenovo, specially designed for Lenovo laptops. Compatible with a range of Lenovo models, this CPU, also known as the "processor", is central to the operation of your laptop, handling all instructions it receives from the software you run. Symptoms of a failing CPU include crashes, blue screens, and a noticeable decrease in performance. If you're experiencing these issues, it might be time to replace the CPU. Before making a purchase, check your device's model number to ensure compatibility.

iFixit is an official Lenovo partner. Our Genuine Lenovo parts are supplied by the official Lenovo supply chain.