5B21B63140 – Lenovo Laptop Motherboard – Genuine

This Lenovo Laptop Motherboard (5B21B63140) is a genuine part, suitable for Lenovo laptops. It serves as the central hub for communication between the laptop’s CPU, RAM, and all other peripherals. Additionally, it is also known as the ‘system board’ or the ‘mainboard.’ Symptoms of a failing motherboard may include the laptop failing to boot, frequent crashes, or peripheral components not functioning properly. Before purchasing, verify your device’s model number for compatibility.

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

This OEM part may be new or refurbished by Lenovo. Lenovo Certified Refurbished products are extensively screened, repaired, tested, and cleaned to high Lenovo standards, but may contain cosmetic imperfections.