Fit for XPS 14 9440 (UMA) designed for UMA thermal configuration; verify your original model before purchase. ^^ Complete Heatsink with Fan Assembly thermal module includes heatsink + fan as one replacement unit. ^^ Match Part Numbers compatible with 091DY0 / 91DY0; fan references EG50050S1-CN40-S9A / CN50-S9A. ^^ Correct Power & Connector DC 5V 0.5A with 4-pin connector for stable operation. ^^ Fix Overheating & Fan Noise ideal when the laptop runs hot, fan is loud, or cooling performance drops.