275W Power Supply for Dell Optiplex 390 790 990 3010 7010 9010 MT, Replacement for AC275AM-00 0R8JX0 PSU 1Pack

Aomoproing 275W power supply is a direct drop-in replacement for Dell OEM models AC275AM-00 and part number 0R8JX0. It is precisely engineered for the Dell Optiplex 390, 790, 990, 3010, 7010, and 9010 MicroTower (MT) series business desktops, delivering consistent and efficient power for daily office, business, and general computing operations.

It supports a universal 100-240V AC input (50-60Hz, 5.0A), ensuring compatibility across all regions. The unit features an OEM-matched form factor and connector layout, including one 24-pin ATX main connector, one 4-pin 12V CPU connector, and four SATA power connectors, enabling a seamless, tool-free installation with no modifications required.

Constructed with high-grade internal components, this power supply incorporates comprehensive safety features: Over-Voltage Protection (OVP), Over-Current Protection (OCP), and Short-Circuit Protection (SCP) to safeguard your motherboard, processor, hard drives, and other critical components. Every unit undergoes rigorous load testing and quality inspection prior to shipment to ensure stable performance, quiet operation, and long-term durability.