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This aftermarket ATX switching power supply strictly follows HP original factory specification, customized replacement spare for HP Pavilion 500-110, 200 G1, 280 G1 series micro tower desktops, cross replaces original PN 742317-001, PCD010 and 751589-001. Standard ATX dimension and identical cable harness eliminate modification work during faulty PSU swap. Active PFC circuit optimizes power utilization to reduce long-term electricity expense for small business & office PC equipment. Adaptive speed fan adjusts rotation speed based on inner temperature to balance heat dissipation and working noise, comprehensive safety protection improves service lifespan. Ideal maintenance replacement part for computer repair store and enterprise desktop equipment renovation.