The D250AD-00 H250AD-00 250W Power Supply is designed specifically for Dell Optiplex 390, 3010, 990, and 790 DT models. With a maximum power output of 250W and 24 pin connectors, this power supply is reliable and efficient for powering your computer system. The silver color and sleek design make it a stylish addition to your setup, while the cooling feature ensures optimal performance. Manufactured by Dell, you can trust in the quality and compatibility of this power supply for your Dell Optiplex desktop.