5B21B63877 - Lenovo Laptop Motherboard - Genuine

This Lenovo Laptop Motherboard (5B21B63877) is a genuine Lenovo system board designed specifically for use in select Lenovo laptops. Given its compatibility exclusively with Lenovo brands, this motherboard serves as the central hub of your laptop, coordinating the communication between all internal components and peripherals. This motherboard, also known as the "system board" or "mainboard," ensures that your laptop operates efficiently by managing data flow between the processor, RAM, storage devices, and other peripherals. Symptoms of a failing motherboard may include the laptop failing to boot, experiencing random shutdowns, or showing signs of hardware component failures. Such symptoms suggest it may be time to replace your laptop's motherboard if troubleshooting other components doesn't resolve the issue. Before purchasing, we advise you to verify your device's model number to ensure compatibility with this part.

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