The HP 633189-001 300W Desktop WorkStation ATX Power Supply is a silver power module designed for HP desktop computers. It features a single fan for cooling, a 24 pin connector, and a maximum power output of 300W. This ATX power supply unit is compatible with 240V systems and offers a surge energy capacity of 125J. With a sleek design and reliable performance, this product is essential for keeping your desktop computer powered and running smoothly.