The PCMCIS ATX 400W Switching Power Supply P4-12V is a reliable and efficient power module designed for computer systems. With a maximum power output of 400W and 12V voltage compatibility, this ATX form factor power supply is suitable for universal use. It features one fan for cooling, a sleek silver color design, and is a single unit quantity. The PCMCIS ATX 400W model offers stable and consistent power delivery for your computer components and peripherals.