FOR CPU Cooling Fan NS85B01-17D18 — Fits Book 14 S4100V & S4200U

Replacement CPU cooling fan, model NS85B01-17D18, designed for Book 14 series laptops — compatible with S4100V and S4200U. This direct-replacement fan helps dissipate heat from the processor to maintain stable performance under load. Easy to install swap for the original cooling unit; please confirm compatibility with your device model before purchasing.