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This CPU cooling replacement fan is specially engineered for Dell Latitude E5440 and E5540 series laptops. Built with 5V 4PIN interface, it fully complies with factory specifications and serves as a drop-in replacement for 087XFX, MF60090V1-C620-S9A and MF60090V1-C480-S99. Optimized fan blade design delivers steady airflow to exhaust internal heat efficiently, resolving noisy fan operation, high temperature warnings and system lag. Precise mounting holes allow plug-and-play installation with no modification required, ideal for laptop repair and daily maintenance.