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This replacement CPU cooling fan is specially made for Toshiba Qosmio F50, F55, F50-10Z and F55-Q502 series. It adopts 5V 3PIN standard connector, fully compatible with original fan part numbers AB7505HX-SB3, BSB0705HC and BSB0705HC-9C2T. It provides stable airflow to efficiently cool internal components, fixing abnormal fan noise, overheating and auto shutdown problems. Precise size and mounting holes allow easy installation without modification, perfect for laptop daily maintenance and cooling fan replacement.