Based on this product's specifications, here are some alternatives and similar models
Power supply Dell PDF9N 250W ATX internal replacement unit
Summary description:
Dell PDF9N is a 250W ATX internal power supply designed as a direct replacement unit for compatible Dell desktop systems. It provides stabilized power for motherboard, CPU and peripherals, fits standard ATX mounting, and includes the necessary connectors for mainstream configurations. Suitable for repairs, upgrades and system maintenance to restore reliable power delivery.