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Aomoproing 320W power supply is a direct drop-in replacement for OEM part numbers 508154-001, 702304-001, 611483-001, 613764-001, PS-4321-9HF, PS-4321-1HB and DPS-320NB-1A. It is designed for HP 8100, 8280 and 8080 Elite series desktops, matching the original size and connector layout for easy installation. It delivers stable power for motherboard, CPU, hard drives and standard office peripherals. Wide 100-240V input and active PFC ensure stable performance worldwide. Built-in safety protections protect your hardware, while a quiet fan provides reliable cooling. Each unit is fully tested before shipment to ensure perfect fit and long-term reliability.