This Lenovo CPU cooling fan (part number 5F10N78686) is specifically engineered for the IdeaPad 320S-14IKB and 520S-14IKB series. Designed to replace the original fan, it delivers reliable airflow to maintain optimal operating temperatures for the laptop’s processor. The fan’s dimensions and mounting points match the original unit, ensuring a seamless fit without requiring additional modifications. Compatible with both models, it supports efficient heat dissipation, helping to preserve performance and extend the lifespan of internal components. Easy to install, it provides a straightforward replacement solution for users seeking to restore cooling efficiency.