This is an HP Pavilion LenovoThinkCenter Replacement Power Supply 250W. The model number is HP-D2537F3P. This power supply is compatible with many HP Pavilion and Lenovo ThinkCenter computers. This item is new and has never been used. They were originally bulk packaged for OEM distribution and we have re-packaged them for individual sale. It is being sold as pictured and does not include any additional accessories or parts.