Item is untested. Could use a cleaning. See photos. The Vintage Compaq DeskPro 2000 Desktop Power Supply 278740-001 is a tested and graded A product designed specifically for the Compaq DeskPro 2000 model. This switching power supply from Gateway is reliable and compatible with the DeskPro 2000 desktop computer, providing a steady and efficient power source for optimal performance. Upgrade or repair your computer with this high-quality power supply to ensure seamless operation and longevity.