The Dell Slim 250W Power Supply D250ND-00, D250AD-00 TFX0250D5W is a reliable and high-quality computer power supply designed by Dell. With a maximum power output of 250W, this TFX form factor power supply is compatible with the model B250AD-00 and offers efficient and stable power delivery for your computer system. Built with durability and performance in mind, this power supply is a great choice for those looking to upgrade or replace their current computer power supply.