Power Supply 500W 90 %

HP 913290-001 is an internal power supply intended for PC and server systems. It is identified with the HP 800 TWR tower series, making its intended role clear as a system power component.

The unit is rated at 500 W and has a listed 90% efficiency. These confirmed specifications describe its power capacity and efficiency rating. The listing identifies this as an internal component; it does not specify connector details or package contents.